If the cost price of 165 chocolates is equal to the selling price of 150 chocolates, the gain percent is Choose the most appropriate option:
A) 8
B) 9
C) 10
D) 11
E) 12
Let C.P. of each chocolate be Re. 1.   Then, C.P. of 150 chocolates = Rs. 150; S.P. of 150 chocolates = Rs. 165.   Gain % = 15/150 * 100= 
<gadget id="calculator">15/150 * 100</gadget>
<output>10</output>
10%   Answer:10
<result>C</result>
If the cost price of 165 chocolates is equal to the selling price of 150 chocolates, the gain percent is