If the cost price of 50 articles is equal to the selling price of 28 articles, then the gain or loss percent is?	Choose one:
A) 22  B) 65  C) 78.57  D) 33  E) 25
Given that, cost price of 50 article is equal to selling price of 28 articles.   Let cost price of one article = Rs. 1   Selling price of 28 articles = Rs. 50   But Cost price of 28 articles = Rs. 28   Therefore, the trader made profit.\Percentage of profit = 22/28 * 100 = 78.57%   Answer:78.57
<result>C</result>
If the cost price of 50 articles is equal to the selling price of 28 articles, then the gain or loss percent is?