Question

number of boys and girls are in the class are in the ratio of 7 : 5 the number of boys is 8 more than the number of girls what is a total class strength?​

Answer 1

Total class strength = 48

Explanation:

Boys : Girls = 7 : 5

Number of boys = 7x

Number of girls = 5x

7x - 5x = 8

2x = 8

x = 8/2

x = 4

Total strength = 7x + 5x = 12x = 12*4 = 48

Answer 2

Explanation:

Given ratio of boys and girls in the class =7:5

No of boys is 8more than the girls

So

Let no of boys in the class =7x

No of girls in the class=5x

7x=5x+8

2x=8

X=8/2

X=4.

Total strength =no of boys + no of girls

=7x+5x

=7×4+5×4

= 28+20

=48.

Total strength in the class is 48.