A trader bought a car at 50% discount on its original price. He sold it at a 80% increase on the price he bought it. What percent of profit did he make on the original price?
Choose the most appropriate option:
A) 17%  B) 62%  C) 12%  D) 19%  E) 71%
Original price = 100   CP = 95   S = 95*(180/100) = 112   100 - 171= 71%   Answer: 71%
<result>E</result>
A trader bought a car at 50% discount on its original price. He sold it at a 80% increase on the price he bought it. What percent of profit did he make on the original price?