In a library the ratio of story books and other books is 7 : 2 and there are 151

Question

In a library the ratio of story books and other books is 7 : 2 and there are 1512 story books. Due to collection of some more story books the ratio becomes 15 : 4. The number of story books collected is = ?

Options:

A . 108

B . 205

C . 100

D . 97

Answer: Option A

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