If the cost price of 35 chocolates is equal to the selling price of 21 chocolates, the gain percent is :  Choose the correct choice from the following options.
A) 66.55% B) 66.66 % C) 66 % D) 55% E) 66.33%
Explanation :   Solution: Let C.P. of each chocolate be Re. 1. then, C.P. of 21 chocolates = Rs. 21;   S.P. of 21 chocolates =Rs. 35.   .'. Gain% = 14*100/21 = 66.66%   Answer : 66.66 %
<result>B</result>
If the cost price of 35 chocolates is equal to the selling price of 21 chocolates, the gain percent is :