Question

The ratio of boys to girls in a classroom is 2:1.

If there are 18 boys, how many girls are there?

Answer 1

There are 9 girls.

Explanation:

Assume the number of girls as X

Then the equation we get is

= 18:X=2:1

=> (18×1)/2 = X

=> 18/2 = X

=> 9 = X [ X is total number of girls, so the total number of girls is 9. ]

Hope this helps you.