Answers

2014-12-13T23:12:17+05:30
Let Rohan's present age be x years.
the Rohan's father's age = 4x
After 5 years,
Rohan's age= x+5 
Rohan's father's age = 4x+5
but Rohan's father's age = 3times rohan's age after 5 years of his present age
=3(x+5)= 3x+15
now, 3x+15=4x+5
15-5=4x-3x
x= 10 years
therefore, Rohan's present age= 10 years
Rohan's father's present age= 10 x 4= 40 years
now, Rohan's age 5 years ago= 10-5= 5 years
Rohan's father's age 5 years ago= 40-5= 35 years.

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2014-12-13T23:29:57+05:30
Let Rons age be x
His fathers age is 4x
ATQ we have  4x+5= 3(x+5)
                     we have x=10
Ron's age five years ago= 10-5=5 years
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