Question

Currently, Sam's coach is three times older than Sam. When Sam started soccer 5 years ago, his coach was five times his age. How old is Sam now?
Answer
15
7
10
5

Answer 1

You want to try?

Answer 2

Ive been trying.

Answer 3

what is it ten?

Answer 4

What did you get?

Answer 5

10

Answer 6

or is it 15

Answer 7

Lets say that the Sam's age is x, and his coach is y, we can say that y=3x. But 5 years ago the coach was 5 times Sam's age, which means y-5=5(x-5). Now solve this equation by first substituting y=3x to get 3x-5=5x-25, which implies 2x=20 or x=10.

Answer 8

So you're correct!