If the cost price of 81 chocolates is equal to the selling price of 45 chocolates, the gain percent is : Choose one:	A) 80%	B) 85%	C) 82%	D) 70%	E) 75%
Explanation :   Solution: Let C.P. of each chocolate be Re. 1. then, C.P. of 45 chocolates = Rs. 45;   S.P. of 45 chocolates =Rs. 81.   .'. Gain% = 36*100/45= 
<gadget id="calculator">36*100/45</gadget>
<output>80</output>
80%   80%nswer : 80%
<result>A</result>
If the cost price of 81 chocolates is equal to the selling price of 45 chocolates, the gain percent is :