I need help with the following in red -

Sheridan Company uses a perpetual irwentory system and reports the following for the month of June. (a1) Calculate the weighted-awerage cost per unit, using a perpetual inventory system. Assume a sale of 400 units occurred on June 15 for a selling price of $9 and a sale of 50 units on June 27 for $9. (Round intermediate calculations to 0 decimal ploces, eg 152 and final onswers to 3 decimal ploces, e.g. 5.125.) June 1 June 12 $ June 15$ June 23$ June 27$ Attempts: 1 of 6 used (a2) Calculate the cost of the ending inventory and the cost of goods sold for each cost flaw assumption, using a perpetual inventory system. Assume a sale of 400 units occurred on June 15 for a selling price of $8 and a sale of 50 units on June 27 for $9. (Round onswers to 0 decimal ploces, e.g. 125.)