Posted by Sunita Kumari 1 month, 1 week ago
Let the present age of son be x.
Present age of father=4x.
Ten year hence his father age will be 3 times his son.
4x + 10 = 3(x + 10)
4x + 10 = 3x + 30
4x - 3x = 30 - 10
x = 20
Son age is=20 years
And father age is=4×20=80 years
Posted by Prateek Sharma 23 hours ago
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