The average monthly income of A and B is Rs. 14000, that of B and C is Rs. 15600 and A and C is Rs. 14400. The monthly income of C is :

Answer: Option A

Income of A and B
= 2 × 14000
= Rs. 28000
Income of B and C
= 2 × 15600
= Rs. 31200
Income of A and C
= 2 × 14400
= Rs. 28800
Income of A, B and C
$$=\frac{\left(28000+31200+28800\right)}{2}$$
= Rs. 44000
C's income
= 44000 - 28000
= Rs. 16000