A trader bought a car at 20% discount on its original price. He sold it at a 40% increase on the price he bought it. What percent of profit did he make on the original price? Options.
A) 62% B) 42% C) 12% D) 22% E) 82%
Explanation:   Original price = 100   12%P = 80   S = 80*(140/100)= 
<gadget id="calculator">80*(140/100)</gadget>
<output>112</output>
112   100 - 112= 12%   Answer: 12%
<result>C</result>
A trader bought a car at 20% discount on its original price. He sold it at a 40% increase on the price he bought it. What percent of profit did he make on the original price?