A trader marks his books 10% more than the cost price. If he allows 20% discount, then find his gain or loss percent?
Choose the correct choice from the following:
A) 2% profit  B) 12% loss  C) 4% loss  D) No profit No loss  E) None of these
Let CP of an book = 100   MP of an book = 110   Discount 20 % on 110 = 22   SP of the book = 110 - 22= 
<gadget id="calculator">110 - 22</gadget>
<output>88</output>
88   LOSS= 12%   Answer : 12% loss
<result>B</result>
A trader marks his books 10% more than the cost price. If he allows 20% discount, then find his gain or loss percent?