What are their birth year?

In the year 2016 the grandfather's age is four times greater than grandson. The sum of their birth year is 3932. Then what are their birth year?

What are their birth year?

In the year 2016 the grandfather’s age is four times greater than grandson.

The sum of their birth year is 3932.

Then what are their birth year?

Thinker Asked on May 30, 2016 in Logical Puzzle.
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2016+2016=4032-3932=100,here 100 is thier sum of thier age..let x is the age of grand son the grand father age is 4x, now x+4x=100,5x=100,x=20 grand son’s age is 20years,so his year of birth is 2016-20=1996,and grandfather’s year is 4*20=80 years so his birth year is 2016-80=1936

 

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Thinker Answered on May 30, 2016.
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