Question

classroom of 40 pupils the number of girls is three-fifth of the number of boys.Find the number of boys in the class.

Answer 1

Hello !

Here is your answer !

$let \: the \: no \: of \: boys \: be \: x \\ \\ then \: \\ \\ the \: no \: of \: girls = \frac{3}{5} x \\ \\ \\ now \\ \\ \frac{3}{5}x + x = 40 \\ \\ \frac{8x}{5} = 40 \\ \\ x = \frac{40 \times 5}{8} = 25$

Hence the no of boys is 25 and no of girl is 40-25=15

Hope it helps u !