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Exercise 3.4 questions 2ka 4

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Exercise 3.4 questions 2ka 4

    • Posted by Gourav Richa Richa 5 years, 1 month ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Gaurav Seth 5 years, 1 month ago

    (iv) Meena went to a bank to withdraw Rs.2000. She asked the cashier to give her Rs.50 and Rs.100 notes only. Meena got 25 notes in all. Find how many notes of Rs.50 and Rs.100 she received.

    Solution:

    Let the number of Rs.50 notes be A and the number of Rs.100 notes be B

    According to the given information,

    A + B = 25 ……………………………………………………………………….. (i)

    50A + 100B = 2000 ………………………………………………………………(ii)

    When equation (i) is multiplied with (ii) we get,

    50A + 50B = 1250 …………………………………………………………………..(iii)

    Subtracting the equation (iii) from the equation (ii) we get,

    50B = 750

    B = 15

    Substituting in the equation (i) we get,

    A = 10

    Hence, Manna has 10 notes of Rs.50 and 15 notes of Rs.100.

    1Thank You

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    Posted by Kanika . 4 days, 11 hours ago

    CBSE > Class 10 > Mathematics
    • 1 answers
    If 1/2 is a root of equation x^2+kx- 5/4 =0 , then what is the value of k

    • Posted by Parinith Gowda Ms 2 months, 2 weeks ago

    CBSE > Class 10 > Mathematics
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    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

    Few rules to keep homework help section safe, clean and informative.
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