Answer:
If 15/10, then 180/120, 135/90, and 45/30.
Step-by-step explanation:
We get this because we can assume the ratio is 3/2 after dividing each side of 15/10 by 5. To easily get these numbers, divide each number by 2, and add it to the original number. For example, 120/2 = 60. 120 + 60 = 180.
