Flint Corporation 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 $64 Sales Units 10 Date July 1 July 6 July 11 July 14 July 21 July 27 9 $68 9 12 $72 11 Calculate average cost for each unit. (For calculation and answers purpose round unit costs to 2 decimal ploos, es 1525) July 1 $ July 6 $ July 11 $ July 14 $ July 21 LA July 27 $