A trader bought a car at 20% discount on its original price. He sold it at a 70% increase on the price he bought it. What percent of profit did he make on the original price?
Choose the most appropriate option.
A) 18% B) 13% C) 12% D) 36% E) 15%
Original price = 100   CP = 80   S = 80*(170/100)= 
<gadget id="calculator">80*(170/100)</gadget>
<output>136</output>
136   100 - 136= 36%   Answer: 36%
<result>D</result>
A trader bought a car at 20% discount on its original price. He sold it at a 70% increase on the price he bought it. What percent of profit did he make on the original price?