Question

Percentage
The ratio of boys to girls in a class is 5 : 7. What is the percentage of girls in the class?
A) 58.3%
B) 37.5%
C) 62.5%
D) 78%​

Answer 1

let the no. be p

5p+7p=100

12p=100

p=100/12

p=8.3

5*8.3=41.7

7*8.3=58.3

a) 58.3%