Eleven bags are bought for Rs.1000 and sold at 10 for Rs.1100. What is the gain or loss in percentage?	Choose one.
A) 29%
B) 21%
C) 23%
D) 28%
E) 27%
Explanation:   As selling price is Rs.1100 for 10 bags, each bag is sold at Rs.110.   Hence, the profit is Rs.100 after selling 10 bags plus the selling price of 1 bag = 100 + 110 = Rs.210.   %profit = 210/1000 *100= 
<gadget id="calculator">210/1000 *100</gadget>
<output>21</output>
21%   ANSWER: 21%
<result>B</result>
Eleven bags are bought for Rs.1000 and sold at 10 for Rs.1100. What is the gain or loss in percentage?