Question

In the library the ratio of the number of math books to the number of english books to the number of science books is 3:7:2 . There are 318 books science books in the library. What is the number of math books

Answer 1

The number of math books is 477.

Explanation:

Given that,

In the library, the ratio of the number of math book to the number of English books to the number of science books is 3:7:2.

Assume,

The number of math books, english books and science books are 3x,7x and 2x respectively.

There are 318 books science book in the library.

According to the problem,

2x=318

`\Rightarrow x=(318)/(2)`

⇒ x=159

The number of math books is = 3x

=3×159

=477