# 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?

- Rs.2000
- Rs.2500
- Rs.2250
- Rs.1800

**Answer: (1) Rs.2000**

**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.