Question

The ratio of boys to girls in a class is 5:6. How many boys are there if there are 33 students in the class?

Answer 1

15.

explaination:

let x be the number which we have to times to the ratio.

(5+x) + (6+x) =33

5x + 6x =33

11x = 33

x=3

so we need to times 3 the ratio to get the actual number.

boys: 5 × 3 =15

girls:6 × 3 = 18

checking the answer: 15+ 18 = 33