Question

in a school 4/5 of students are boys, and number of girls is 100,find the number of boys​

Answer 1

Answer:

400

Step-by-step explanation:

let total students=X

then 4x/5+100=x

4x/5=x-100

4x=5x-500

-x=-500

X=500

total students=500

boys=4*500/5=400

Answer 2

Let the number of students be x.

•°• number of boys will be 4/5(x)

A.T.Q,

4x/5 + 100 = x

4x + 500 = 5x

5x - 4x = 500

x = 500

Number of boys = 4/5(x)

= 4/5 × 500

= 4 × 100

= 400 students are boys while 100 students are girls.