If the selling price of 50 articles is equal to the cost price of 20 articles, then the loss or gain percent is:  Choose the correct choice from the following answers
A) 45%	B) 23%	C) 20%	D) 60%	E) 56%
C.P. of each article be Re. 1.   Then, C.P. of 50 articles = Rs. 50;   S.P. of 50 articles = Rs. 20.   Loss % = 30/50 * 100= 
<gadget id="calculator">30/50 * 100</gadget>
<output>60</output>
60%   ANSWER 60%
<result>D</result>
If the selling price of 50 articles is equal to the cost price of 20 articles, then the loss or gain percent is: