A man is four times as old as his son. in four years' time, he will be three times as old. what are there ages now?
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Let the present age of man be 4x and age of the son be x
After 4 years
age of son will be x + 4 and age of the man will be 4x + 4
4x + 4 = 3(x +4)
4x + 4 = 3x + 12
X = 8
Hence the present ages of man and son will be 32 and 8 years respectively
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