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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 ?
Answer & Solution
Correct Answer:
Option
A
$$\frac{P + Q + R}{3}$$ = R + 5
P + 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
P + 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
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