The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is?	Choose one
A) Rs.4078 B) Rs.4000 C) Rs.4029 D) Rs.4027 E) Rs.4020
Let P, Q and R represent their respective monthly incomes. Then, we have:   P + Q = (5050 * 2)= 
<gadget id="calculator">(5050 * 2)</gadget>
<output>10_100</output>
10100 --- (i)   Q + R= (6250 * 2)= 
<gadget id="calculator">(6250 * 2)</gadget>
<output>12_500</output>
12500 --- (ii)   P + R= (5200 * 2)= 
<gadget id="calculator">(5200 * 2)</gadget>
<output>10_400</output>
10400 --- (iii)   Adding (i), (ii) and (iii), we get:   2(P + Q + R)= 33000 = P + Q + R = 16500 --- (iv)   Subtracting (ii) from (iv), we get, P = 4000.   P's monthly income = Rs.4000.   Answer: Rs.4000
<result>B</result>
The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is?