Question

After painting 3/8 of a fence he finds that he has painted 15 feet

Answer 1

whats the question? theres no context other than that little bit

Answer 2

The fence is 40 feet long.

Explanation:

I suppose the question is "What is the length of the entire fence?"

Formula

3/8 x = 15 Multiply both sides by 8

8*(3/8)x = 15*8 Cancel

3x = 120 Divide by 3

3x/3 = 120/3

x = 40