The average monthly income of P and Q is Rs. 2050. The average monthly income of Q and R is Rs. 5250 and the average monthly income of P and R is Rs. 6200. The monthly income ofQ is:
Choose the correct choice from the following answers.
A) 1100
B) 2100
C) 1200
D) 3100
E) 1300
Explanation:   Let P, Q and R represent their respective monthly incomes. Then, we have:   P + Q = (2050 x 2) = 4100 .... (i)   Q + R = (5250 x 2) = 10500 .... (ii)   P + R = (6200 x 2) = 12400 .... (iii)   Adding (i), (ii) and (iii), we get: 2(P + Q + R) = 27000 or P + Q + R = 13500 .... (iv)   Subtracting (iii) from (iv), we get P = 1100.   P's monthly income = Rs. 1100.   1100nswer: 1100
<result>A</result>
The average monthly income of P and Q is Rs. 2050. The average monthly income of Q and R is Rs. 5250 and the average monthly income of P and R is Rs. 6200. The monthly income ofQ is: