A librarian purchased 60 story books for his library But he found that he could get 4 extra books by...........

Quantitative Aptitude (CGL) Average

A librarian purchased 60 story books for his library. But he found that he could get 4 extra books by spending Rs 336 more and then the overall average price per book would be reduced by Re 1. The previous average price of each book was

Rs 84

Rs 83

Rs 68

Rs 100

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Explanation:

Let the average price of Book is Rs. x/book.
So, According to question,
60x + 336 = 64 (x - 1)
64x - 60x = 336 + 64
4x = 400
Initially Book price x = 100