A6. The ratio of boys to girls in a class of 32 students is $1: 3$. How many more girls are there?
(A) 24
(B) 8
(C) 16
(D) 20
(E) 14
A6. Since the ratio of boys to girls is $1: 3$, there are $t$ boys and $3 t$ girls, making a total of $4 t=32$, so $t=8$. There are 8 boys and 24 girls, thus there are 16 more girls.