A man buys an article for $110. and sells it for $125. Find the gain percent? Choose the correct choice from the following answers:
A) 10 %
B) 13.6 %
C) 25 %
D) 20 %
E) 30 %

Rationale: "c . p . = $ 110 s . p . = $ 125 gain = $ 15 gain % = 15 / 110 * 100 = 13.6 % answer is b"
Answer: B