Question

In a class 4/5 of the girls had brown hair. Of the girls with brown hair, 3/4 of them had long hair. of the girls with long brown hair 1/3 of them had green eyes. What fraction of the girls in the class had long brown hair and green eyes?

Answer 1

lets say there are 100 girls.
4/5 of 100 is 80, so 80 girls have brown hair.
3/4 of the 80 who have brown hair have long hair.
3/4 of 80 is 60.
so we know that out of 100, 60 have long brown hair.
in simplest fraction form, 60/100= 3/5