A tradesman by means of his false balance defrauds to the extent of 20%? in buying goods as well as by selling the goods. What percent does he gain on his outlay? Choose the correct choice from the following answers.
A) 13% B) 14% C) 44% D) 66% E) 77%
g% = 20 + 20 + (20*20)/100= 
<gadget id="calculator">20 + 20 + (20*20)/100</gadget>
<output>44</output>
44%   Answer: 44%
<result>C</result>
A tradesman by means of his false balance defrauds to the extent of 20%? in buying goods as well as by selling the goods. What percent does he gain on his outlay?