If the cost price of 11 pens is equal to the selling price of 10 pens, the gain percent is:  Answers:
A) 10%  B) 26%  C) 50%  D) 80%  E) 34%
Solution :   Let cost price of the price be Rs.1   10 pens C.P. = 10   11 pens S.P. = 11   Gain = 1/10*100= 
<gadget id="calculator">1/10*100</gadget>
<output>10</output>
10 %   10%nswer : 10%
<result>A</result>
If the cost price of 11 pens is equal to the selling price of 10 pens, the gain percent is: