The cost price of 13 articles is equal to the selling price of 11 articles. Find the profit percent? Choose one
A) 18 2/71%	B) 18 2/11%	C) 18 9/11%	D) 18 2/41%	E) 2 2/11%
13 CP = 11 SP   11 --- 2 CP   100 --- ? =&gt;18 2/11%   Answer: 18 2/11%
<result>B</result>
The cost price of 13 articles is equal to the selling price of 11 articles. Find the profit percent?