Question

in fifth grade class 4/5 of girls have brown hair. of the brown haired girls 3/4 of them have long hair. what fraction of the girls in the class have long brown hair

Answer 1

3/5

You have 4 out of 5 and 3 out of those 4, so you pretty much end up with 3/5

Answer 2

16/20 of the girls have brown hair
15/20 of the girls have long hair