Question

There are 45 boys in a school and 25% girls, then find how much girls?

Answer 1

Answer:

15

Step-by-step explanation

Let the total number in the school be , x therefore

45 + 25x/100 = x

45 = x - 25x/100

45 = 100x - 25x/100

45 = 75x/100

45 x 100 = 75x

4500 = 75x

x = 4500/75

x = 60

No. of girls = 25% of x

= 25% of 60

= 25/100 x 60

= 15