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2014-06-03T11:41:17+05:30

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Present age of son be x
father's age= 5x
According to the question
after 7 years
father's age= 5x+7
son's age=x+7
So
5x+7+x+7=68
6x+14=68
6x=68-14
x=54/6
x=9
Hence
father's age= 5x=45
son's age=x=9
hope it helps us 
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