Aaron Corporation, which has only one product, has provided the following data concerning its most recent month of operations: Selling price $90
Units in beginning inventory 0
Units produced 3,400
Units sold 3,000
Units in ending inventory 400
Variable costs per unit:
Direct materials $21
Direct labor $38
Variable manufacturing overhead $6
Variable selling and administrative expense $4

Fixed costs:
Fixed manufacturing overhead $54,400
Fixed selling and administrative expense $3,000

What is the unit product cost for the month under variable costing?