If the selling price of 50 articles is equal to the cost price of 25 articles, then the loss or gain percent is: Pick.
A) 45% B) 23% C) 20% D) 60% E) 50%
C.P. of each article be Re. 1.   Then, C.P. of 50 articles = Rs. 50;   S.P. of 50 articles = Rs. 25.   Loss % = 25/50 * 100= 
<gadget id="calculator">25/50 * 100</gadget>
<output>50</output>
50%   ANSW50%R 50%
<result>E</result>
If the selling price of 50 articles is equal to the cost price of 25 articles, then the loss or gain percent is: