Question

The ratio of the njmber of girls to that of boys in a class is 2:5 if the number of boys is 40find the number of girls in the class

Answer 1

Hey there!

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Ratio is a significance of comparison between two same units.

Ratio is denoted by the symbol ':' which is pronounced as 'is to'

Ratios can be rewritten in fractional form too.

Solution:

Let the number of girls and boys be in the ratio 2x : 5x

It has been told that the number of boys is 40.

Therefore,

5x = 40
x = 40/5
x = 8

The value of x is 8.

So, total number of girls

= 8*2
= 16

Therefore there are 16 girls in the class.

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Hope this is cleared!

Thanks!