The cost price of 13 articles is equal to the selling price of 11 articles. Find the profit percent? Choose the correct choice:
A) 18 2/15
B) 18 2/11
C) 18 2/14
D) 18 2/16
E) 18 2/12
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?