Question

In a class there are 18 boys who are over 160 cm tall if these constitutes three fourth of the boys and the total number of boys is two third of the total number of students in the class what is the number of girls in the class

Answer 1

let total boys be x

3/4 of x = 18

x = 24

total boys = 24

total boys is 2/3 of total students

let total students be y

2/3 of y = 24

y = 36

total students = 36

girls = total students - boys

= 36 - 24

= 12