A trader sells goods to a customer at a profit of k% over the cost price, besides it he cheats his customer by giving 880 g only instead of 1 kg. Thus his overall profit percentage is 255. Find the value of k? Select
A) 8.33%	B) 8.25%	C) 10%	D) 12.5%	E) None
Solution: % Profit = 25 /100 = (120 +k)/ 880   → k = 100   Thus,   Net % profit = (100 *100) /1000= 
<gadget id="calculator">(100 *100) /1000</gadget>
<output>10</output>
10%.   Answer: Option 10%
<result>C</result>
A trader sells goods to a customer at a profit of k% over the cost price, besides it he cheats his customer by giving 880 g only instead of 1 kg. Thus his overall profit percentage is 255. Find the value of k?