Question

The ratio of the number of boys and girls in a class is 5:9 find the number of girls if the total number of student in the class is 56

Answer 1

ratio =5:9
let the ratio be x
No of boys and girls =5x , 9x
Total no of student =56

ATQ,
5x+9x=56
14x=56
$x = \frac{56}{14}$
x=4
no of girls = 9x=36
no of girls = 5x = 20
n

Answer 2

total students = 56
let no. boys = 5 x
let no. girls. = 9 x

5 x + 9 x = 56
14 x = 56
x = 56/14
x = 4

no. of girls = 9*4 = 36
no. of boys = 5*4 = 20