If two mixers and one T.V cost Rs. 7000. While two T.V s and one mixer cost Rs. 9800. The value of one T.V is:_________?

A. Rs. 2800
B. Rs. 2100
C. Rs. 4200
D. Rs. 8400

Explanation:

2X + Y = 7000

X + 2Y = 9800

Solving (i) and (ii), we get Y = 4200