A dealer offers a cash discount of 20% and still makes a profit of 20%, when he further allows 16 articles to a dozen to a particularly sticky bargainer. How much percent above the cost price were his wares listed?  Select
A) 100% B) 80% C) 75% D) 66(2/3)% E) NOne
Solution: Let the CP of the article be Rs. x, since he earns a profit of 20%, hence SP= X + 20% of X = 1.2x.   It is given that he incurs loss by selling 16 articles at the cost of 12 articles [loss = (16-12)/16 = 25%]   His selling price = SP - 25% of SP = SP*0.75;   Hence, SP*0.75 = 1.2X.   Or, SP = (1.2*x/0.75) = 1.6X.   This SP is arrived after giving a discount of 20% on MP.   Let MP = Y.   Y - 20% of Y = SP   0.80Y = 1.6X.   Y = 2X.   It means that the article has been marked 100% above the cost price. Or Marked Price was twice of cost price.   100%nswer: Option 100%
<result>A</result>
A dealer offers a cash discount of 20% and still makes a profit of 20%, when he further allows 16 articles to a dozen to a particularly sticky bargainer. How much percent above the cost price were his wares listed?