Answer:
The number of math books is 477.
Step-by-step 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
[tex]\Rightarrow x=\frac{318}{2}[/tex]
⇒ x=159
The number of math books is = 3x
=3×159
=477
