# The ratio of blue marbles to white marbles in a bag is 4 to 5. At this rate, how many blue marbles are there if there are 15 white marbles?

##### 1 Answer

Nov 14, 2016

By ratio we have 12 blue marbles for 15 white ones

#### Explanation:

Multiply by 1 but where

By ratio we have 12 blue marbles for 15 white ones