Sunil purchases two books at Rs. 300 each. He sold one book 10% gain and other at 10% loss. What is the total loss or gain in percentage? Pick one:
A) 10% gain B) 1% loss C) no loss or no gain D) 1% gain E) 2%
tot cost = 300 + 300= 
<gadget id="calculator">300 + 300</gadget>
<output>600</output>
600   total selling price    300 * 110/100 + 300 * 90/100= 
<gadget id="calculator"> 300 * 110/100 + 300 * 90/100</gadget>
<output>600</output>
600   total cost price= total selling price   hence there is neither loss nor gain   ANSWER no loss or no gain
<result>C</result>
Sunil purchases two books at Rs. 300 each. He sold one book 10% gain and other at 10% loss. What is the total loss or gain in percentage?