Question

A jar contains 31 marbles of which 10 are blue 4 are red and the rest are green. What is the ratio of blue marbles to green marbles?

Answer 1

The answer is 10:17, this is because the test are green and you know 10 is the number of blue ones.

Answer 2

10:17

Explanation:

31 total

10 blue

4 red

31-(10+4)= 31-14= 17

17 green

10:17