A merchant marks his goods up in such a way that the profit made on selling 30 articles is equal to the cost price of 20 articles. What is the % profit made by the merchant? Pick
A) 66.67 % B) 50 % C) 200 % D) 100 % E) 33.33 %
Let Selling Price be x and Cost Price be y of each article;   now, 30x - 30y = the profit earned on selling 30 articles   it is known that the profit earned on 30 articles i.e 30x - 30y = 20y (Cost price of 20 articles)   we get, 30x = 50y   that means x/y = 50/30   Selling Price/Cost price = 5/3   Something that costs $3 is being sold at $5 which is at 66.67% profit.   66.67 %NSWER:66.67 %
<result>A</result>
A merchant marks his goods up in such a way that the profit made on selling 30 articles is equal to the cost price of 20 articles. What is the % profit made by the merchant?