The average monthly income of P and Q is Rs 5050…

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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:

  1. A. 3500
  2. B. 4000
  3. C. 4050
  4. D. 5000

E. None of these

Here is complete explanation of The average monthly income of P and Q is Rs 5050….

Solution(By ExamCraze 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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