The cost price of 15 articles is equal to the selling price of 11 articles. Find the profit percent?  Choose the correct choice from the following:
A) 18 2/91%
B) 36 4/11%
C) 18 9/11%
D) 18 2/91%
E) 12 2/11%
15 CP = 11 SP   11 --- 2 CP   100 --- ? =&gt;36 4/11%   Answer:36 4/11%
<result>B</result>
The cost price of 15 articles is equal to the selling price of 11 articles. Find the profit percent?