Answer:
Given - 15 apples
9 green
rest are red
To find - Ratio of red apples to all apples
Ratio of green apples to red apples
Solution -
15 apples - 9 apples = rest apples
6 apples = rest apples
Ratio of all apples to red apples = 9/ 15 = 3/5
Ratio of green apples to red apples = 6/9 = 2/3