SOLUTION: A boy is 12 years old. His mother is four times as old as he is. In x years time, the mother will be three times as old as the son. find x.

Question 718093: A boy is 12 years old. His mother is four times as old as he is. In x years time, the mother will be three times as old as the son. find x.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A boy is 12 years old. His mother is four times as old as he is. In x years time, the mother will be three times as old as the son. find x.
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His mother is now 48.
The age difference is 36, which is constant.
m = 3b (mom is 3 times as old)
m = b + 36
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Solve for m or b
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