Asked by Saras

The sum of the ages of a father and his son is 62 years. 15 years ago, the father was 7 times as old as his son. How old is the son now?
Answered by PsyDAG
F = 62 - S

F - 15 = 7(S-15)

Substitute 62-S for F in the second equation and solve for S.
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