Question

The ratio of females to total students in a mathematics class is 18 to 30. What fraction of the class is male? What percent is male?

Answer 1

2/5 or 40%

Explanation:

total students=30

female students=18

That must mean, assuming the rest of the class is binary male=12

12/30=2/5 or 40% if you multiply by 20, then multiply by 100%

(2/5)*20=.40*100%=40%