Correct Answer: Option D
Let the present ages of son and father be
x and (60 -x) years respectively.
Then, (60 - x) - 6 = 5(x - 6)
=> 54 - x = 5x - 30
=> 6x = 84
=> x = 14.
So, Son's age after 6 years = (x+ 6) = 20 years
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