Question

Jessica has fifteen dolls. Four-fifths of time dolls have brown hair. How many of her dolls don't have brown hair?

Answer 1

3

Explanation:

There are several methods one could use. I will provide one.
`4/5` is equal to `20%`. `20` goes into `100` five times.
`100/20=5`
Determine, then, what `4/5` of `15` is by determining what number goes into `15` five times.
`15/5 = 3`
`3` goes into `15` five times.
`5/5` of `15 = 15`
`4/5` of `15 = 12` because `4*3 = 12`
`15-12 = 3`
So, `4/5`, or `3`, of the dolls do not have brown hair.