Question

The public library has volunteers shelve books after they have been returned. When Lisa arrives to volunteer, there are 5 non-fiction books for every 9 fiction books. If there are 117 fiction books to shelve, then how many non-fiction books need to be shelved?

Answer 1

52

Step-by-step explanat

because 117 -56-9=52

Answer 2

65 non-fiction books need to be shelved

Explanation:

This question can be solved using a rule of three.

For each 5 non-fiction books, there are 9 fiction books. How many non-fiction books are there when there are 117 fiction books?

5 non-fiction - 9 fiction

x non-fiction - 117 fiction

`9x = 5*117`

`x = (5*117)/(9)`

`x = 65`

65 non-fiction books need to be shelved