Correct Answer - Option 4 : 25 years
Given
P is 5 years older than Q who is twice as old as R and the total of ages of P, Q and R be 55 years
Calculations :
Let the age of P, Q and R be p, q and r.
Age of P = 5 + q
Age of Q = q
Age of R = q/2
According to the question
5 + q + q + (q/2) = 55
⇒ q = 50/2.5
⇒ q = 20
Age of P = 5 + q
⇒ 5 + 20 = 25
∴ The correct choice will be option 4.