SOLUTION: if age of son is half of his father and 15 years ago his age was 1-third of his father .find his present age.

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Question 977133: if age of son is half of his father and 15 years ago his age was 1-third of his father .find his present age.
Answer by anand429(138) About Me  (Show Source):
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Let son and father's age be s and f
So, as per ques,
s+=+f%2F2 and %28s-15%29=+%281%2F3%29%2A%28f-15%29
Solving both equation we get,
3%2A%28s-15%29+=+%282s-15%29
=> s=30
=> f=60