Question

The ratio of girls to the total number of students in class is 4 to 7 how many students are girls if the class has 20 students in all? 4/7=/21

a.) 16
b.) 18
c.) 14
d.) 12

Answer 1

D
4/X= X/20
Cross multiply
7x=80
Divide by 7
X= 11.4