Problem 6-9A (Part Level Submission Wildhorse Co. began operations on July 1. It uses a perpetual inventory system. During July, the company had the following purchases and sales Purchases Date Units Unit Cost Sales Units July 1 uly 6 July 11 July 14 July 21 July 27 13 $115 $123 $132 (a1) Calculate average cost for each unit. (For calculation and answers purpose round unit costs to 2 decimal places, e.g. 15.25.) July 1 $ July 6 $ July 11 $ July 14 $ July 21 s July 27 $