a trader bought a car at 20 % 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 correct choice from the following answers
A) 18 %	B) 13 %	C) 12 %	D) 32 %	E) 44 %
<gadget id="calculator">100 - 20</gadget>
<output>80</output>

<gadget id="calculator">100 + 80</gadget>
<output>180</output>

<gadget id="calculator">80 * 180</gadget>
<output>14_400</output>

<gadget id="calculator">14_400 / 100</gadget>
<output>144</output>

<gadget id="calculator">144 / 100</gadget>
<output>36/25 = around 1.44</output>

<gadget id="calculator">(36/25) - 1</gadget>
<output>11/25 = around 0.44</output>

<gadget id="calculator">(11/25) * 100</gadget>
<output>44</output>

<result>E</result>
a trader bought a car at 20 % 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?
multiply(subtract(divide(divide(multiply(subtract(const_100, 20), add(const_100, 80)), const_100), const_100), const_1), const_100)
"original price = 100 cp = 80 s = 80 * ( 180 / 100 ) = 112 100 - 144 = 44 % answer : e"