Question

if 2/3 of the girls in class have brown eyes and 1/4 of the girls have blue eyes, what fraction of the girls in class have neither blue or brown eyes? need help

Answer 1

2/3 = 8/12
1/4 = 3/12
hence fraction of girls with neither blue or black eyes = 1 - 8/12 -3/12 = 1/12

Answer 2

Answer with explanation:

Number of girls in the class who has brown eyes $=\frac{2}{3}$

 Number of girls in the class who has blue eyes $=\frac{1}{4}$

Fraction of the girls in class who has neither blue or brown eyes

                         $=1-\frac{2}{3}-\frac{1}{4}\\\\=1-\frac{11}{12}\\\\=\frac{1}{12}$