Question

Rohan is 26 years younger to his father the father is 20 years younger to Rohan's grandfather if sum of the there is 84 years what is the age of the father

Answer 1

Since , Let age of Rohan, Father and grandfather denotes x,y and z
Now,
Given Conditions
x=y-26 ..... (i)
also,
y=z-20 ...... (ii)
and
x+y+z = 84 ...... (iii)
Now Substract (i) and (ii)
x-y=y-26-z+20
x-2y+z=-6 ..... (a)

Now Substract (a) from (iii)
3y= 84+6
3y=90
y=30
Hence, 30 is the age of father.
hope it helps you.