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?
Stacey Warren - Expert brainly.com
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multiply 5 to both sides
c = 2s
c-10 = 3(s-10) --> c - 10 = 3s - 30 --> c = 3s - 20
2s = 3s - 20
s = 20
c = 40
Wow that should not have been that hard for me. Sorry it took so long
Now he is twice sam's age. That is where the first equation came from.
10 years ago, so start with c - 10 and s - 10, the coach was 3 times sam's age. That is where the 3 comes from. I simplified then substituted in the 2s for c to solve for s. Then I knew c