Question

A merchant bought 15 dozen pens at 10 per dozen. He sold them at * 1.50 each. Find his profit or loss per cent,​

Answer 1

he has 15 dozen so cost = 150

he sold each at 1.50 so selling price per dozen

= 18 per dozen

15 dozen selling price = 270

profit = 270 - 150 = 120