The cost price of 13 articles is equal to the selling price of 11 articles. Find the profit percent? Choose the correct choice from the following options.
A) 67 2/16% B) 45 2/17% C) 18 2/11% D) 23 2/13% E) 14 2/10%
18 2/11%   13 18 2/11%P = 11 SP   11 --- 2 18 2/11%P   100 --- ? =&gt;18 2/11%
<result>C</result>
The cost price of 13 articles is equal to the selling price of 11 articles. Find the profit percent?