Question

The ratio of mathematics books to the number of science books in a library is 5:2 if there are 1421 mathematics and science books altogether how many more mathematics books than science books are there in library

Answer 1

Answer:609 books

Step-by-step explanation: Let the common ratio be x

Then, 5x+2x=1421

7x=1421

x=203

There are 1015 mathematics books and 406 science books.

1015-406=609

Answer 2

Step-by-step explanation:

Le the common multiple be x

mathematics books = 5x

science books = 2x

5x + 2x = 1421

7x = 1421

x = 1421/7

x = 203

mathematics books = 5x = 5 x 203

= 1015

science books = 2x = 2 x 203

= 406