There are 54 mice in the barn. If the ratio of brown mice to gray mice is 1:2, how many gray mice are there?

Step-by-step explanation:

step 1. add the ratio part

1+2=3

step 2. use answer from step 1 and divide

54/3 is 18

step 3. use 18 into both of the mice

brown: 18*1 is 18 brown mice

. Gray: 18*2 is 56 gray mice

There fore there are 56 gray mice