Problem 6-09A Pharoah Company began operations on July 1. It uses a perpetual inventory system. During July, the company had the following purchases and sales. Purchases Units Unit Cost 13 $70 Sales Units 10 Date July 1 July 6 July 11 July 14 July 21 July 27 9 $74 9 12 $78 11 Calculate average cost for each unit. (For calculation and answers purpose round unit costs to 2 decimal places, 0.9. 15.25.) July 1 $ July 6 $ July 11 $ July 14 $ July 21 $ July 27 $