Question: 1. Belts cost $4 and sell with a markup of $2.40. Find the selling price of the belts.
2. A compact disc player sells for $300. The cost is $86. Find the markup of the CD player.
3. Twenty decorative enamel balls cost $12.75 each and are marked up $9.56.
a. Find the selling price for each one.
b. Find the total amount of margin or markup for the 20 balls.