The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
A. 3500
B. 4000
C. 4050
D. 5000
E. None of these
Answer: Option B
Solution(By Examveda Team)
Let P, Q and R represent their respective monthly incomes. Then, we have:P + Q = (5050 x 2) = 10100 .... (i)
Q + R = (6250 x 2) = 12500 .... (ii)
P + R = (5200 x 2) = 10400 .... (iii)
Adding (i), (ii) and (iii), we get: 2(P + Q + R) = 33000 or P + Q + R = 16500 .... (iv)
Subtracting (ii) from (iv), we get P = 4000
Therefore P's monthly income = Rs. 4000
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Comments ( 1 )
Related Questions on Average
A. 125 km/hr
B. 75 km/hr
C. 135 km/hr
D. 120 km/hr
PQ= 5050
QR = 6250
PR = 5200
Now,
PQ+PR-QR
5050+5200-6250
10250-6250
=4000 ans