If the cost price is 82% of the selling price, then what is the profit percent?  Choose the correct choice:  A) 5 %  B) 22 %  C) 13 %  D) 21 %  E) 19 %

Rationale: "let s . p . = $ 100 c . p . = $ 82 profit = $ 18 profit % = 18 / 82 * 100 = 25 / 6 = 22 % approximately answer is b"
Answer: B