# What will be the Monthly Income of A?If

The average monthly income of A and B is Rs.1500. The average monthly income of B and C is Rs.2500 and the average monthly income of A and C is Rs.3000. What is the monthly income of A?

1. Rs.2000
2. Rs.2500
3. Rs.2250
4. Rs.1800
Monis Rasool Professor Asked on 30th June 2015 in

Explanation:-
The average monthly income of A and B = Rs.1500
The sum of monthly income of A and B = 2 x 1500 = Rs.3000 or A + B = 3000              …………….(1)
The average monthly income of B and C = Rs.2500
The sum of monthly income B and C = 2 x 2500 = Rs.5000 or B + C = 5000                 . …………….. (2)
The average monthly income of A and C = Rs.3000
The sum of monthly income A and C = 2 x 3000 = Rs.6000    or A + C = 6000      …………….          (3)
Solve equation (1) & (2)
A – C = – 2000           ………………    (4)
Again,         Solve equation (3)  & (4)
2A = 4000
A = 4000/2 = 2000
Thus, the monthly income of A is Rs.2000.

Anurag Mishra Professor Answered on 1st July 2015.