Question

Sam's coach is twice as old as Sam. When Sam started soccer 10 years ago, his coach was 3 times his age. How old is Sam now?

Answer 1

If Sam's age is x and his coach is y, then y=2x and x-10=3y.

Answer 2

Not quite. I think it comes out something like

y = 2x and y-10 = 3(x-10)

They were both younger ten years ago.

Answer 3

so would that make sam 15...?

Answer 4

I think if you use my equations, you will get Sam is 20. That means his coach is forty now, and ten years ago they were ten and thirty.