{"id":4762,"date":"2016-05-18T09:49:00","date_gmt":"2016-05-18T04:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-class-8-maths-exercise-15-1\/"},"modified":"2018-06-27T12:38:48","modified_gmt":"2018-06-27T07:08:48","slug":"ncert-solutions-for-class-8-maths-exercise-15-1","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/","title":{"rendered":"NCERT Solutions for Class 8 Maths Exercise 15.1"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#NCERT_Solutions_for_Class_8_Maths_Introduction_to_Graphs\" >NCERT Solutions for Class 8 Maths Introduction to Graphs<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#Class_%E2%80%93VIII_MathematicsEx_151\" >Class \u2013VIII Mathematics(Ex. 15.1)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#NCERT_SOLUTION\" >NCERT SOLUTION<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#1_The_following_graph_shows_the_temperature_of_a_patient_in_a_hospital_recorded_every_hour\" >1. The following graph shows the temperature of a patient in a hospital, recorded every hour:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#a_What_was_the_patients_temperature_at_1_pm\" >(a) What was the patient\u2019s temperature at 1 p.m.?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#b_When_was_the_patients_temperature_385%C2%B0_C\" >(b) When was the patient\u2019s temperature 38.5\u00b0 C?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#c_The_patients_temperature_was_the_same_two_times_during_the_period_given_What_were_these_two_times\" >(c) The patient\u2019s temperature was the same two times during the period given. What were these two times?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#d_What_was_the_temperature_at_130_pm_How_did_you_arrive_at_your_answer\" >(d) What was the temperature at 1.30 p.m.? How did you arrive at your answer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#e_During_which_periods_did_the_patients_temperature_showed_an_upward_trend\" >(e) During which periods did the patients\u2019 temperature showed an upward trend?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#Ans_a_The_patients_temperature_was_365o_C_at_1_pm\" >Ans. (a) The patient\u2019s temperature was 36.5o C at 1 p.m.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#b_The_patients_temperature_was_385o_C_at_12_noon\" >(b) The patient\u2019s temperature was 38.5o C at 12 noon.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#c_The_patients_temperature_was_same_at_1_pm_and_2_pm\" >(c) The patient\u2019s temperature was same at 1 p.m. and 2 p.m.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#d_The_temperature_at_130_pm_is_365o_C_The_point_between_1_pm_and_2_pm_axis_is_equidistant_from_the_two_points_showing_1_pm_and_2_pm_So_it_represents_130_pm_Similarly_the_point_on_axis_between_36o_C_and_37o_C_will_represent_365o_C\" >(d) The temperature at 1.30 p.m. is 36.5o C. The point between 1 p.m. and 2 p.m., axis is equidistant from the two points showing 1 p.m. and 2 p.m. So it represents 1.30 p.m. Similarly the point on axis, between 36o C and 37o C will represent 36.5o C.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#e_The_patients_temperature_showed_an_upward_trend_from_9_am_to_11_am\" >(e) The patient\u2019s temperature showed an upward trend from 9 a.m. to 11 a.m.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#2_The_following_line_graph_shows_the_yearly_sales_figures_for_a_manufacturing_company\" >2. The following line graph shows the yearly sales figures for a manufacturing company.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#3_For_an_experiment_in_Botany_two_different_plants_plant_A_and_plant_B_were_grownunder_similar_laboratory_conditions_Their_heights_were_measured_at_the_end_of_each_week_for_3_weeks_The_results_are_shown_by_the_following_graph\" >3. For an experiment in Botany, two different plants, plant A and plant B were grownunder similar laboratory conditions. Their heights were measured at the end of each week for 3 weeks. The results are shown by the following graph.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#4_The_following_graph_shows_the_temperature_forecast_and_the_actual_temperature_for_each_day_of_a_week\" >4. The following graph shows the temperature forecast and the actual temperature for \neach day of a week.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#5_Use_the_tables_below_to_draw_linear_graphs\" >5. Use the tables below to draw linear graphs.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#b_Population_in_thousands_of_men_and_women_in_a_village_in_different_years\" >(b) Population (in thousands) of men and women in a village in different years.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#6_A_courier-person_cycles_from_a_town_to_a_neighbouring_suburban_area_to_deliver_a_parcel_to_a_merchant_His_distance_from_the_town_at_different_times_is_shown_by_the_following_graph\" >6. A courier-person cycles from a town to a neighbouring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graph.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#7_Can_there_be_a_time-temperature_graph_as_follows_Justify_your_answer\" >7. Can there be a time-temperature graph as follows? Justify your answer.<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#NCERT_Solutions_for_Class_8_Maths_Exercise_151\" >NCERT Solutions for Class 8 Maths Exercise 15.1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-15-1\/#CBSE_app_for_Class_8\" >CBSE app for Class 8<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 8 Maths Exercise 15.1 Class 8 Maths book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 8 Maths chapter wise NCERT solution for Maths Book all the chapters can be downloaded from our website and myCBSEguide mobile app for free<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Class 8 Maths\u00a0Introduction to Graphs <a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-08-mathematics-introduction-to-graphs\/1464\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/08_Maths_Book.jpg\" alt=\"NCERT Solutions for Class 8 Maths Exercise 15.1\" width=\"165\" height=\"208\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_8_Maths_Introduction_to_Graphs\"><\/span>NCERT Solutions for Class 8 Maths Introduction to Graphs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Class_%E2%80%93VIII_MathematicsEx_151\"><\/span><strong>Class \u2013VIII Mathematics(Ex. 15.1)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"NCERT_SOLUTION\"><\/span><strong>NCERT SOLUTION<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"1_The_following_graph_shows_the_temperature_of_a_patient_in_a_hospital_recorded_every_hour\"><\/span><strong>1. <\/strong><strong>The following graph shows the temperature of a patient in a hospital, recorded every hour:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><img decoding=\"async\" id=\"Picture 1\" style=\"height: 241px; width: 264px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image001.jpg\" \/><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"a_What_was_the_patients_temperature_at_1_pm\"><\/span><strong>(a) What was the patient\u2019s temperature at 1 p.m.?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"b_When_was_the_patients_temperature_385%C2%B0_C\"><\/span><strong>(b) When was the patient\u2019s temperature 38.5\u00b0 C?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"c_The_patients_temperature_was_the_same_two_times_during_the_period_given_What_were_these_two_times\"><\/span><strong>(c) The patient\u2019s temperature was the same two times during the period given. What were these two times?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"d_What_was_the_temperature_at_130_pm_How_did_you_arrive_at_your_answer\"><\/span><strong>(d) What was the temperature at 1.30 p.m.? How did you arrive at your answer?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"e_During_which_periods_did_the_patients_temperature_showed_an_upward_trend\"><\/span><strong>(e) During which periods did the patients\u2019 temperature showed an upward trend?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"Ans_a_The_patients_temperature_was_365o_C_at_1_pm\"><\/span><strong>Ans.<\/strong> <strong>(a)<\/strong> The patient\u2019s temperature was 36.5<sup>o<\/sup> C at 1 p.m.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"b_The_patients_temperature_was_385o_C_at_12_noon\"><\/span><strong>(b)<\/strong> The patient\u2019s temperature was 38.5<sup>o<\/sup> C at 12 noon.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"c_The_patients_temperature_was_same_at_1_pm_and_2_pm\"><\/span><strong>(c)<\/strong> The patient\u2019s temperature was same at 1 p.m. and 2 p.m.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"d_The_temperature_at_130_pm_is_365o_C_The_point_between_1_pm_and_2_pm_axis_is_equidistant_from_the_two_points_showing_1_pm_and_2_pm_So_it_represents_130_pm_Similarly_the_point_on_axis_between_36o_C_and_37o_C_will_represent_365o_C\"><\/span><strong>(d)<\/strong> The temperature at 1.30 p.m. is 36.5<sup>o<\/sup> C. The point between 1 p.m. and 2 p.m., <img decoding=\"async\" style=\"height: 15px; width: 25px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image002.png\" \/>axis is equidistant from the two points showing 1 p.m. and 2 p.m. So it represents 1.30 p.m. Similarly the point on <img decoding=\"async\" style=\"height: 17px; width: 25px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image003.png\" \/>axis, between 36<sup>o<\/sup> C and 37<sup>o<\/sup> C will represent 36.5<sup>o<\/sup> C.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"e_The_patients_temperature_showed_an_upward_trend_from_9_am_to_11_am\"><\/span><strong>(e)<\/strong> The patient\u2019s temperature showed an upward trend from 9 a.m. to 11 a.m.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"2_The_following_line_graph_shows_the_yearly_sales_figures_for_a_manufacturing_company\"><\/span><strong>2. <\/strong><strong>The following line graph shows the yearly sales figures for a manufacturing company.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><img decoding=\"async\" id=\"Picture 4\" style=\"height: 242px; width: 277px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image004.jpg\" \/><\/p>\n<p><strong>(a)<\/strong> <strong>What were the sales in (i) 2002 (ii) 2006?<\/strong><\/p>\n<p><strong>(b) What were the sales in (i) 2003 (ii) 2005?<\/strong><\/p>\n<p><strong>(c) Compute the difference between the sales in 2002 and 2006.<\/strong><\/p>\n<p><strong>(d) In which year was there the greatest difference between the sales as compared<br \/>\nto its previous year?<\/strong><\/p>\n<p><strong>Ans.<\/strong> <strong>(a)<\/strong> The sales in:<\/p>\n<p><strong>(i)<\/strong> 2002 was Rs.4 crores and <strong>(ii)<\/strong> 2006 was Rs.8crores.<\/p>\n<p><strong>(b)<\/strong> The sales in:<\/p>\n<p><strong>(i)<\/strong> 2003 was Rs.7crores<\/p>\n<p><strong>(ii)<\/strong> 2005 was Rs.10crores.<\/p>\n<p><strong>(c)<\/strong> The difference of sales in 2002 and 2006 = Rs.8crores \u2013 Rs.4crores = Rs.4crores<\/p>\n<p><strong>(d)<\/strong> In the year 2005, there was the greatest difference between the sales as compared to its previous year, which is (Rs.10crores \u2013 Rs.6crores) = Rs.4crores.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"3_For_an_experiment_in_Botany_two_different_plants_plant_A_and_plant_B_were_grownunder_similar_laboratory_conditions_Their_heights_were_measured_at_the_end_of_each_week_for_3_weeks_The_results_are_shown_by_the_following_graph\"><\/span><strong>3. <\/strong><strong>For an experiment in Botany, two different plants, plant A and plant B were grownunder similar laboratory conditions. Their heights were measured at the end of each week for 3 weeks. The results are shown by the following graph.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><img decoding=\"async\" id=\"Picture 7\" style=\"height: 181px; width: 287px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image005.jpg\" \/><\/p>\n<p><strong>(a)<\/strong> <strong>How high was Plant A after (i) 2 weeks (ii) 3 weeks?<\/strong><\/p>\n<p><strong>(b) How high was Plant B after (i) 2 weeks (ii) 3 weeks?<\/strong><\/p>\n<p><strong>(c) How much did Plant A grow during the 3rd week?<\/strong><\/p>\n<p><strong>(d) How much did Plant B grow from the end of the 2nd week to the end of the 3rd week?<\/strong><\/p>\n<p><strong>(e) During which week did Plant A grow most?<\/strong><\/p>\n<p><strong>(f) During which week did Plant B grow least?<\/strong><\/p>\n<p><strong>(g) Were the two plants of the same height during any week shown here? Specify.<\/strong><\/p>\n<p><strong>Ans.<\/strong> <strong>(a)<\/strong> <strong>(i)<\/strong> The plant A was 7 cm high after 2 weeks and<\/p>\n<p><strong>(ii)<\/strong> after 3 weeks it was 9 cm high.<\/p>\n<p><strong>(b) (i)<\/strong> Plant B was also 7 cm high after 2 weeks and<\/p>\n<p><strong>(ii)<\/strong> after 3 weeks it was 10 cm high.<\/p>\n<p><strong>(c)<\/strong> Plant A grew = 9 cm \u2013 7 cm = 2 cm during 3<sup>rd<\/sup> week.<\/p>\n<p><strong>(d)<\/strong> Plant B grew during end of the 2<sup>nd<\/sup> week to the end of the 3<sup>rd<\/sup> week<\/p>\n<p>= 10 cm \u2013 7 cm = 3 cm.<\/p>\n<p><strong>(e)<\/strong> Plant A grew the highest during second week.<\/p>\n<p><strong>(f)<\/strong> Plant B grew the least during first week.<\/p>\n<p><strong>(g)<\/strong> At the end of the second week, plant A and B were of the same height.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 15.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"4_The_following_graph_shows_the_temperature_forecast_and_the_actual_temperature_for_each_day_of_a_week\"><\/span><strong>4. <\/strong><strong>The following graph shows the temperature forecast and the actual temperature for<br \/>\neach day of a week.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) <\/strong><strong>On which days was the forecast temperature the same as the actual temperature?<\/strong><\/p>\n<p><strong>(b) <\/strong><strong>What was the maximum forecast temperature during the week?<\/strong><\/p>\n<p><strong>(c) <\/strong><strong>What was the minimum actual temperature during the week?<\/strong><\/p>\n<p><strong>(d) <\/strong><strong>On which day did the actual temperature differ the most from the forecast<br \/>\ntemperature?<\/strong><\/p>\n<p><img decoding=\"async\" style=\"height: 165px; width: 267px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image006.jpg\" \/><\/p>\n<p><strong>Ans.(a)<\/strong> On Tuesday, Friday and Sunday, the forecast temperature was same as the actual temperature.<\/p>\n<p><strong>(b)<\/strong> The maximum forecast temperature was 35<sup>o<\/sup> C.<\/p>\n<p><strong>(c)<\/strong> The minimum actual temperature was 15<sup>o<\/sup> C.<\/p>\n<p><strong>(d)<\/strong> The actual temperature differed the most from the forecast temperature on Thursday.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 15.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"5_Use_the_tables_below_to_draw_linear_graphs\"><\/span><strong>5. <\/strong><strong>Use the tables below to draw linear graphs.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><img decoding=\"async\" id=\"Picture 3\" style=\"height: 56px; width: 287px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image007.png\" \/><\/p>\n<p><strong>(a)<\/strong> <strong>The number of days a hill side city received snow in different years.<\/strong><\/p>\n<p><img decoding=\"async\" id=\"Picture 5\" style=\"height: 180px; width: 513px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image008.jpg\" \/><\/p>\n<h6><span class=\"ez-toc-section\" id=\"b_Population_in_thousands_of_men_and_women_in_a_village_in_different_years\"><\/span><strong>(b)<\/strong> <strong>Population (in thousands) of men and women in a village in different years.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans.<\/strong>\u00a0 <strong>(a)<\/strong><\/p>\n<p><img decoding=\"async\" style=\"height: 272px; width: 252px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image009.png\" \/><\/p>\n<p><strong>(b)<\/strong><\/p>\n<p><img decoding=\"async\" id=\"Picture 10\" style=\"height: 297px; width: 176px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image010.jpg\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 15.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"6_A_courier-person_cycles_from_a_town_to_a_neighbouring_suburban_area_to_deliver_a_parcel_to_a_merchant_His_distance_from_the_town_at_different_times_is_shown_by_the_following_graph\"><\/span><strong>6. <\/strong><strong>A courier-person cycles from a town to a neighbouring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graph.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><img decoding=\"async\" id=\"Picture 13\" style=\"height: 190px; width: 259px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image011.jpg\" \/><\/p>\n<p><strong>(a) What is the scale taken for the time axis?<\/strong><\/p>\n<p><strong>(b) How much time did the person take for the travel?<\/strong><\/p>\n<p><strong>(c) How far is the place of the merchant from the town?<\/strong><\/p>\n<p><strong>(d) Did the person stop on his way? Explain.<\/strong><\/p>\n<p><strong>(e) During which period did he ride fastest?<\/strong><\/p>\n<p><strong>Ans.<\/strong> <strong>(a)<\/strong> 4 units = 1 hour.<\/p>\n<p><strong>(b)<\/strong> The person took <img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image012.png\" \/>\u00a0hours for the travel.<\/p>\n<p><strong>(c)<\/strong> It was 22 km far from the town.<\/p>\n<p><strong>(d)<\/strong> Yes, this has been indicated by the horizontal part of the graph. He stayed from 10 am to 10.30 am.<\/p>\n<p><strong>(e)<\/strong> He rode the fastest between 8 am and 9 am.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 15.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"7_Can_there_be_a_time-temperature_graph_as_follows_Justify_your_answer\"><\/span><strong>7. Can there be a time-temperature graph as follows? Justify your answer.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><img decoding=\"async\" id=\"Picture 16\" style=\"height: 245px; width: 276px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/15_1\/image013.jpg\" \/><\/p>\n<p><strong>Ans.<\/strong>\u00a0 <strong>(i)<\/strong>\u00a0\u00a0\u00a0 It is showing the increase in temperature.<\/p>\n<p><strong>(ii)<\/strong>\u00a0\u00a0 It is showing the decrease in temperature.<\/p>\n<p><strong>(iii)<\/strong>\u00a0 The graph figure <strong>(iii)<\/strong> is not possible since temperature is increasing very rapidly which is not possible.<\/p>\n<p><strong>(iv)<\/strong>\u00a0 It is showing constant temperature.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_8_Maths_Exercise_151\"><\/span>NCERT Solutions for Class 8 Maths Exercise 15.1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 8\u00a0Mathematics PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 8\u00a0Mathematics includes text book solutions from Class 8 Maths Book . NCERT Solutions for CBSE Class 8 Maths have total 16 chapters. 8 Maths NCERT Solutions in PDF for free Download on our website. Ncert class 8 solutions PDF and Maths ncert class 8 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_app_for_Class_8\"><\/span>CBSE app for Class 8<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 8 Social Science, Computer Science, Home Science,Hindi ,English, Maths Science do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 8 Maths Exercise 15.1 Class 8 Maths book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. 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