Question

2/5 of a school are boys. when 1/5 of the boys are absent 160 boys are present. How many girls are in the school?

Answer 1

1/5 boys absent means 4/5 present
4/5 boys = 160 = 4*40

So, there are 5*40 = 200 boys

2/5 of the students are boys

200 = 2/5 * 500

So, there are 500 students in all.

Now you can see how many are girls.

Answer 2

I want you help me this question is so very tough to me it says a school has 900 pupils if there are 200 boys ,how many more boys are in school