Stuck on how to figure out average cost for each unit. Please help!

Problem 6-9A (Part Level Submission) Blossom Company began operations on July 1. It uses a perpetual inventory system. During July, the company had the following purchases and sales. Purchases Unit Cost Units Sales Units $132 Date July 1 July 6 July 11 July 14 July 21 July 27 $141 $151 (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 6s July 11 $ July 14 $ July 21 July 27 s Click if you would like to Show Work for this question: Open Show Work