If the price of a TV is first decreased by 20% and then increased by 40%, then the net change in the price will be : Select:
A) 4 % increase B) 12 % increase C) 10 % decrease D) 6 % increase E) none of these

Rationale: "explanation : solution : let the original price be rs . 100 . new final price = 140 % of ( 80 % of 100 ) = rs . 140 / 100 * 80 / 100 * 100 = rs . 112 . . ' . increase = 12 % answer : b"
Answer: B