Martinez Companys relevant range of production is 7,500 units to 12,500 units. When it produces and sells 10,000 units, its average costs per unit are as follows:

	Average Cost per Unit
Direct materials	$	6.10
Direct labor	$	3.60
Variable manufacturing overhead	$	1.40
Fixed manufacturing overhead	$	4.00
Fixed selling expense	$	3.10
Fixed administrative expense	$	2.10
Sales commissions	$	1.10
Variable administrative expense	$	0.55

13. If the selling price is $22.10 per unit, what is the contribution margin per unit?