If the price of a TV is first decreased by 20% and then increased by 50%, then the net change in the price will be :
Pick.
A) 20 % increase
B) 10 % increase
C) 10 % decrease
D) 6 % increase
E) none of these

Rationale: "explanation : solution : let the original price be rs . 100 . new final price = 150 % of ( 80 % of 100 ) = rs . 150 / 100 * 80 / 100 * 100 = rs . 120 . . ' . increase = 20 % answer : a"
Answer: A