A man bought a bike at 40% 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? Pick.
A) 2% B) 8% C) 6% D) 4% E) 10%
Original price = 100   CP = 60   S = 60*(180/100)= 
<gadget id="calculator">60*(180/100)</gadget>
<output>108</output>
108   100 - 108= 8%   Answer: 8%
<result>B</result>
A man bought a bike at 40% 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?