A retailer buys 80 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 % ? Select the correct option.
A) 110  B) 115  C) 112  D) 118  E) 120
let the market price of each pen be $1   then, Cost Price of 80 pens = $ 36 Selling Price of 80 pens =99% of $80=$ 79.20   profit %=((43.20*100)/36)= 
<gadget id="calculator">((43.20*100)/36)</gadget>
<output>120</output>
120%   Answer 120)120
<result>E</result>
A retailer buys 80 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 % ?