Question

The ratio of boys to girls in the class is 4:5. How many boys are there if there are 27 students?

Answer 1

12 boys

Explanation:

boys : girls

4 : 5

Add a total column

boys : girls: total

4 : 5 : 4+5 =9

To get to a total of 27 we multiply each term by 3

boys : girls: total

4*3 : 5*3 : 9*3

12 :15 :27

There are 12 boys