Question

in a school,5/8 of the students are boys.if there 240 girls,find the number of boys in the school.​

Answer 1

let the total students be x

so, boys=5/8x

so,girls= x-5/8x

=3/8x

so, 3/8x=240

x=240*8/3

x=640

so, no. of boys=640-240

=400

Answer 2

Answer: 400 Boys

Explanation:

Given,

Fraction of boys = 5/8

No. of Girls in class = 240

To find,

Total no. of Boys = ?

Let the number of Boys is X

                    Fraction of girls = 1 - 5/8 = 3/8

So, girls = 3/8 × x

It means, Faction of Girls = 3/8

240 = 3/8 × x

x = 240 × 8 /3 = 640

                   Number of boys = 5/8 of 640

= 5/8 × 640

= 400

Therefore, Total no. of boys in a school are 400.

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Explanation:

In this question, we have to find Total no. of Boys in school. Girls are given as 240. And the faction of Boys is given as 5/8.

First of all, we get the Fraction of Girls. Which is 3/8. After that, We multiply 3/8 with 640.

Then finally, we get 400.