Multiple choice

A total of 32 books and 40 copies were purchased for Rs. 6960. If the average price of a book was Rs. 155, find the average price of the copies.

  1. Rs. 50

  2. Rs. 60

  3. Rs. 30

  4. Rs. 20

  5. Rs. 40
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A Correct answer
Explanation

Sum of quantities = average of quantities x number of quantities

Then, let the average price of a copy be Rs. x.

So, 32 * 155 + 40 * y = 6960

4960 + 40y = 6960

y = 50

Therefore, the average price of copies is Rs. 50.

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