Question

the boys and girls in a school are in the ratio 9 is 25 if the number of girls is 320 then the total strength of the school

Answer 1

In school, boys : girls = 9 : 25

Total value = 9 + 25 = 34

Boys fraction = 9/34

Girls fraction = 25/34

Let, total strength of school = x

Given that,

number of girls = 320

==> x * 25/34 = 320

==> x = 320 * 34/25

==> x = 435.2

Hence, the strength of school = 435 ( approximately )