A retailer buys 40 pens at the market price of 36 pens from a wholesaler ,if he sells these pens giving a discount of 1% ,what is the profit % ? Choose the correct choice from the following options.
A) 2% B) 7% C) 9% D) 5% E) 10%
let the market price of each pen be Rs 1   then,C.P of 40 pens = Rs 36 S.P of 40 pens =99% of Rs 40=Rs 39.60   profit %=((3.60*100)/36)= 
<gadget id="calculator">((3.60*100)/36)</gadget>
<output>10</output>
10%   Ans: 10%
<result>E</result>
A retailer buys 40 pens at the market price of 36 pens from a wholesaler ,if he sells these pens giving a discount of 1% ,what is the profit % ?