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## NCERT Solutions for Class 6 Maths Algebra

**Class –VI Mathematics **

**(Ex. 11.4)**

**Question 1.**Answer the following:

(a) Take Sarita’s present age to be {tex}y{/tex} years.

(i) What will be her age 5 years from now?

(ii) What was her age 3 years back?

(iii) Sarita’s grandfather is 6 times her age. What is the age of her grandfather?

(iv) Grandmother is 2 years younger than grandfather. What is grandmother’s age?

(v) Sarita’s father’s age is 5 years more than 3 times Sarita’s age. What is her father’s age?

(b)The length of a rectangular hall is 4 meters less than 3 times the breadth of the hall. What is the length, if the breadth is {tex}b{/tex} meters?

(c)A rectangular box has height {tex}h{/tex} cm. Its length is 5 times the height and breadth is 10 cm less than the length. Express the length and the breadth of the box in terms of the height.

(d)Meena, Beena and Leena are climbing the steps to the hill top. Meena is at step {tex}s,{/tex} Beena is 8 steps ahead and Leena 7 steps behind. Where are Beena and Meena? The total number of steps to the hill top is 10 less than 4 times what Meena has reached. Express the total number of steps using {tex}s.{/tex}

(e)A bus travels at {tex}v{/tex} km per hour. It is going from Daspur to Beespur. After the bus has travelled 5 hours. Beespur is still 20 km away. What id the distance from Daspur to Beespur? Express it using {tex}v.{/tex}

**Answer:**

(a)(i) {tex}y + 5{/tex}

(ii) {tex}y – 3{/tex}

(iii) {tex}6y{/tex}

(iv) {tex}6y – 2{/tex}

(v) {tex}3y + 5{/tex}

(b) Length = {tex}3b{/tex} and Breadth = {tex}\left( {3b – 4} \right){/tex} meters

(c) Height of the box = {tex}h{/tex} cm

Length of the box = 5 times the height = {tex}5h{/tex} cm

Breadth of the box = 10 cm less than length = {tex}\left( {5h – 10} \right){/tex} cm

(d) Meena’s position = {tex}s{/tex}

Beena’s position = 8 steps ahead = {tex}s + 8{/tex}

Leena’s position = 7 steps behind = {tex}s – 7{/tex}

Total number of steps = {tex}4s – 10{/tex}

(e) Speed of the bus = {tex}v{/tex} km/h

Distance travelled in 5 hours = {tex}5v{/tex} km

Remaining distance = 20 km

Therefore, total distance = {tex}\left( {5v + 20} \right){/tex} km

NCERT Solutions for Class 6 Maths Exercise 11.4

**Question 2.**Change the following statements using expressions into statements in ordinary language.

(For example, given Salim scores {tex}r{/tex} runs in a cricket match, nalin scores {tex}\left( {r + 15} \right){/tex} runs. In ordinary language – Nalin scores 15 runs more than Salim).

(a)A note book costs `{tex}p.{/tex} A book costs `{tex}3p.{/tex}

(b)Tony puts {tex}q{/tex} marbles on the table. He has {tex}8q{/tex} marbles in his box.

(c)Our class has {tex}n{/tex} students. The school has {tex}20n{/tex} students.

(d)Jaggu is {tex}z{/tex} years old. His uncle is {tex}4z{/tex} years old and his aunt is {tex}\left( {4z – 3} \right){/tex} years old.

(e)In an arrangement of dots there are {tex}r{/tex} rows. Each row contains 5 dots.

**Answer:**

(a) A book cost 3 times the cost of a notebook.

(b) The number of marbles in box is 8 times the marble on the table.

(c) Total number of students in the school is 20 times that in our class.

(d) Jaggu’s uncle’s age is 4 times the age of Jaggu. Jaggu’s aunt is 3 years younger than his uncle.

(e) The total number of dots is 5 times the number of rows.

NCERT Solutions for Class 6 Maths Exercise 11.4

**Question** 3.

(a) Given, Munnu’s age to be {tex}x{/tex} years. Can you guess what {tex}\left( {x – 2} \right){/tex} may show? (**Hint**: Think of

Munnu’s younger brother). Can you guess what {tex}\left( {x + 4} \right){/tex} may show? What {tex}\left( {3x + 7} \right){/tex} may show?

(b) Given Sara’s age today to be {tex}y{/tex} years. Think of her age in the future or in the past. What will the following expression indicate? {tex}y + 7,y – 3,y + 4\frac{1}{2},y – 2\frac{1}{2}{/tex}

(c) Given, {tex}n{/tex} students in the class like football, what may {tex}2n{/tex} show? What may {tex}\frac{n}{2}{/tex} show? (**Hint**: Think of games other than football).

**Answer:**

(a) Munnu’s age = {tex}x{/tex} years

His younger brother is 2 years younger than him = {tex}\left( {x – 2} \right){/tex} years

His elder brother’s age is 4 years more than his age = {tex}\left( {x + 4} \right){/tex} years

His father is 7 year’s more than thrice of his age = {tex}\left( {3x + 7} \right){/tex} years

(b) Her age in past = {tex}\left( {y – 3} \right),\left( {y – 2\frac{1}{2}} \right){/tex}

Her age in future = {tex}\left( {y + 7} \right),\left( {y + 4\frac{1}{2}} \right){/tex}

(c) Number of students like hockey is twice the students liking football, i.e., {tex}2n{/tex}

Number of students like tennis is half the students like football, i.e., {tex}\frac{n}{2}{/tex}

## NCERT Solutions for Class 6 Maths Exercise 11.4

NCERT Solutions Class 6 Maths PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 6 Maths includes text book solutions from Class 6 Maths Book . NCERT Solutions for CBSE Class 6 Maths have total 14 chapters. 6 Maths NCERT Solutions in PDF for free Download on our website. Ncert Maths class 6 solutions PDF and Maths ncert class 6 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.

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