The volume of a sphere is 
So, if the small sphere has radius
and the largest sphere has radius
, their volumes are

So, their ratio is

Answer:
2 rides per hour
Step-by-step explanation:
This is a division problem since we would need to divide in order to answer the question.
Divide the amount of rides she rode to the number of hours she was there.
Input the numbers below:
amount of rides she rode/number of hours there
14/7=2
At this rate, Ramona rode 2 rides per hour.
Answer; #3, 240 would be your correct answer