A vendor bought 6 toffees for a rupee.How many for a rupee he must sell to gain 20%.  Choices
A) 3  B) 4  C) 5  D) 6  E) 7
SP=(100+20)*1/100= 
<gadget id="calculator">(100+20)*1/100</gadget>
<output>6/5 = around 1.2</output>
1.20   1.20 rupees=6 toffees   so for 1 rupee=6/1.2= 
<gadget id="calculator">6/1.2</gadget>
<output>5</output>
5   ANSWER:5
<result>C</result>
A vendor bought 6 toffees for a rupee.How many for a rupee he must sell to gain 20%.