If the selling price of 10 articles is same as the cost price of 12 articles. Find the gain or loss percentage?  Pick one:
A) 10% B) 20% C) 30% D) 32% E) None
Let the C.P of each article be Re 1. Then,   S.P of 10 articles = C.P of 12 articles = Rs. 12   Now, C.P of 10 articles = Rs. 10, S.p of 10 articles = Rs 12   Gain = Rs ( 12 - 10 )= 
<gadget id="calculator">( 12 - 10 )</gadget>
<output>2</output>
Rs 2.   Gain%= ( 2/10 × 100 ) % = 20%   20%)
<result>B</result>
If the selling price of 10 articles is same as the cost price of 12 articles. Find the gain or loss percentage?