Blossom Center 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 13 $62 July 6 10 July 11 6 $66 July 14 9 July 21 12 $70 July 27 11 (a1) Calculate weighted-average unit cost. (Round answers to 3 decimal places, e.g. 15.251.) July 1 SA $ July 6 SA July 11 $ July 14 $ July 21 $ July 27 $