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The average monthly income of P and Q is Tk.5050. The average monthly income of Q and R is Tk.6250 and the average monthly income of P and R is Tk.5200. Calculate the monthly income of P.

Correct Answer: Tk.4000
P + Q = 10100Q + R = 12500P + R = 10400Now,P - Q = 10400 - 12500P - Q = -2100P + Q = 10100So, 2P = 8000Or, P = 4000 

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:

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