Lagle Corporation has provided the following information:

	Cost per Unit			Cost per Period
Direct materials	$	5.25
Direct labor	$	3.90
Variable manufacturing overhead	$	1.40
Fixed manufacturing overhead				$	7,200
Sales commissions	$	1.80
Variable administrative expense	$	0.30
Fixed selling and administrative expense				$	6,600

If 4,500 units are sold, the variable cost per unit sold is closest to: