Answers

2015-08-05T15:14:25+05:30
Average salary of A and B = 14000
 \frac{A+B}{2} = 14000
A + B = 28000  ..(1)

Average salary of B and C is 15000
 \frac{B+C}{2} = 15000
B + C = 30000    .........(2)

Average salary of C and A is 14400
 \frac{C+A}{2} = 14400
C + A = 28800    .........(3)

Adding three equations, 
2(A+B+C)  = 86800
A+B+C = 43400

A's salary = (A+B+C) - (B+C)
               = 43400 - 30000
               = 13400
0