Question

The average monthly income of A and B is Rs. 5050. The average monthly income of B and C is Rs.

6250 and the average monthly income of A and C is Rs. 5200. What is the monthly income of A?

Answer 1

Answer:

Step-by-step explanation:

Let monthly income of A = a

monthly income of B = b  

monthly income of C = c

a + b = 2 × 5050 .... (Equation 1)

b + c = 2 × 6250 .... (Equation 2)

a + c = 2 × 5200 .... (Equation 3)

(Equation 1) + (Equation 3) - (Equation 2)

=> a + b + a + c - (b + c) = (2 × 5050) + (2 × 5200) - (2 × 6250)

=> 2a = 2(5050 + 5200 - 6250)

=> a = 4000

i.e., Monthly income of A = 4000