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Age problem

John is twice as old as his son. In five years John's age will be three times what his son's age was six years ago. How old are they?

Let J stands for John and S for his son.

J=2S. In five years: J+5=3(S-6). Substitute 2S for J in second equation and we get: 2S+5=3S-18. When we solve it we get S=23. Substitute 23 in J=2S and we get J=46.

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Mohammad M.

Math is an enjoyable, fun subject for everyone.

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