If the cost price of 12 pens is equal to the selling price of 9 pens, the gain percent is:	Answers
A) 80%	B) 90%	C) 33%	D) 40%	E) 10%
Explanation:   Let C.P. of each pen be Re. 1.   Then, C.P. of 9 pens = Rs. 9; S.P. of 9 pens = Rs. 12.   Gain % = 3/9 * 100 = 33%   Answer:33%
<result>C</result>
If the cost price of 12 pens is equal to the selling price of 9 pens, the gain percent is: