Question

The ratio of boys to girls in a class 3 : 4 . There are 20 girls in the class .

How many are boys in the class ?​

Answer 1

Answer:

let , boys be x

So,

3/4 = x/ 20

4x= 20×3

4x= 60

x = 60/4

x = 15

Therefore, no. of boys are 15

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