The Solution:
We are given the decimal below:

We are asked to express the given decimal as a fraction in its lowest term.

Therefore,
2.5 what just use the formula pi•(4/3r•r)
Answer:
F has 10 marbles and I has 5 marbles.
Step-by-step explanation:
First, I subtracted 10 from 15 since F has 10 more marbles than I. When I subtracted I got 5.
Hope this helps!!!!