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Question

a man is 3 times the age of his son after 5 years his age will be 2 times the age of the man and his son

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Solution

Let the present age of man be x yearsand the present age of son be y years.A.T.Qx=3yx-3y=0 ...1After 5 years Age of man be x+5 years.Age of son be y+5 years.A.T.Qx+5=2y+5x+5=2y+10x-2y=5 ...2Subtracting 1 from 2 , we get-2y+3y=5y=5Substituting the value of y in 1 , we getx-35=0x=15 .So , age of man is 15 years and age of son is 5 years.

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