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? Choose one: A) 10% B) 12% C) 14% D) 20% E) 22%
Original price = 100   CP = 80   S = 80*(140/100)= 
<gadget id="calculator">80*(140/100)</gadget>
<output>112</output>
112   100 - 112= 12%   12%)
<result>B</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?