Q399
The average age of P, Q and R is 15 years more than R's age. If the total age of P and Q together is 39 years, then R's age is ?
A.
12 years
AnswerB.
24 years
C.
16 years
D.
14 years
Answer: Option A
Solution
Answer: Option A
Solution:
= R + 5P + Q + R = 3R + 15
P + Q - 2R = 15 . . . . . (i)
P + Q= 39 . . . . . (ii)
From equation (i) and (ii)
39 - 2R = 15
2R = 24
R = 12 years