If the cost price of 60 articles is equal to the selling price of 50 articles, then what is the percent profit?	Choose the correct choice:	A) 10%	B) 15%	C) 20%	D) 25%	E) 30%
Let x be the cost price of one article.   Let y be the selling price of one article.   50y = 60x   y = 1.2x   The answer is 20%.
<result>C</result>
If the cost price of 60 articles is equal to the selling price of 50 articles, then what is the percent profit?