A tradesman by means of his false balance defrauds to the extent of 80%? in buying goods as well as by selling the goods. What percent does he gain on his outlay? Choose the correct answer
A) 240%  B) 180%  C) 200%  D) 224%  E) 220%
g% = 80 + 80 + (80*80)/100= 
<gadget id="calculator">80 + 80 + (80*80)/100</gadget>
<output>224</output>
224%   ANSWER:224%
<result>D</result>
A tradesman by means of his false balance defrauds to the extent of 80%? in buying goods as well as by selling the goods. What percent does he gain on his outlay?