SOLUTION: A man's age is 42 years and his son's age is 12 years. After how many years will the man be thrice as old as his son?
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Question 995611: A man's age is 42 years and his son's age is 12 years. After how many years will the man be thrice as old as his son?
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.
42 + x = 3*(12+x).
42 + x = 36 + 3x,
2x = 42 - 36
2x = 6,
x = = 3.
Answer. After 3 years.
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