Question

Currently, 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

c = 2s
c - 10 = 3(s-10)

2s - 10 = 3s - 30
3s - 30 = 2s - 10
3s - 30 - 2s = 2s - 10 -2s
s - 30 = -10
s = -10 + 30
s = 20

Answer 2

Check

20 - 10 = 10, and 40 -10 = 30
10*3 = 30
20 * 2 = 40

Answer 3

so the answer is 20??

Answer 4

Yes, Sam is 20 years old now.

Answer 5

thank u! :)