Question

A hawker gain the selling price of 4 ball point pens on selling 1dozen pens what is his gain percent​

Answer 1

cost price of 1 pen =X

cost price of dozen pens =12x

cost prise of 4 pens =4x

selling prize of 4 pens = cost price of 12 pens =12x

gain=12x-4x=8x

gain percentage=gain/ cost price×100=8x/4x×100=200%

Answer 2

Answer:

answer----

Step-by-step explanation:

cost price of 1 pen =X

cost price of dozen pens =12x

cost prise of 4 pens =4x

selling prize of 4 pens = cost price of 12 pens =12x

gain=12x-4x=8x

gain percentage=gain/ cost price×100=8x/4x×100=200%