Given: The average age of P, Q, R and S is 30 years.
Asked: How old is R?

P + Q + R + S = 30*4 = 120 years
R = ?

(1) The sum of ages of P and R is 60 years.
P + R = 60
S + Q = 60
Since P is unknown
NOT SUFFICIENT

(2) S is 10 years younger than R.
S = R - 10
P + Q + R + R - 10 = 120
P + Q + 2R = 130
Since P & Q are unknown
NOT SUFFICIENT

(1) + (2)
(1) The sum of ages of P and R is 60 years.
P + R = 60
(2) S is 10 years younger than R.
S = R - 10
P + Q + 2R = 130
60 + Q + R = 130
Q + R = 70
Since Q is unknown
NOT SUFFICIENT

IMO E
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Hi Shaunakdesai
Please recheck OA and provide OE.


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The correct answer is E. Edited.
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