Under a buy one get one free offer, with the selling price of a t-shirt of 4200. The shopkeeper says he got 33.33% profit. What is cost price ?
Choose one:  A) 1575.04  B) 1675.04  C) 1775.04  D) 1475.04  E) 1875.04
sp=4200   profit=33.33%=(100+33.33)= 
<gadget id="calculator">(100+33.33)</gadget>
<output>133.33</output>
133.33   cp=(100*4200)/133.33   =3150.07 (cp for 2 t-shirt)   so cp for 1t-shirt= 1575.04   1575.04NSWER:1575.04
<result>A</result>
Under a buy one get one free offer, with the selling price of a t-shirt of 4200. The shopkeeper says he got 33.33% profit. What is cost price ?