The following are information about.19 purchases and sales for main product of AMEER Inc. for year 2020 9,000 units / ((Beginning inventory)) $4 each :((Purchases)) February: 21,000 units / $6 each - June: 30,000 units / $8 each - (Sales)) .March: 20,000 units - .November: 30,000 units - AMEER uses the "Weighted Average "method Required: If you know that AMEER uses the ((perpetual inventory system)), compute the "weighted average cost per unit" on June 30 (1.5 )