Question

9. There are 45 marbles in a bag (black and white only). The ratio of white marbles to black marbles is 2:3.

How many of each are there?

Answer 1

18 white and 27 black

Explanation:

add 2 + 3 to get 5

45 ÷ 5 = 9

since white is 2, multiply 9 by 2 to get 18

since black 3, multiply 9 by 3 to get 27