Inits first month of operations, Bethke Company made three purchases of merchandise in the following sequence: (1) 300 units at $6, (2) 400 units at $7, and (3) 200 units at $8. (a1) Calculate the average unit cost. (Round answer to 2 decimal places, E.8. 15.25.) Average unit covt $ In its first month of operations, Bethke Company made three purchases of merchandise in the following sequence: (1) 300 units at $6. (2) 400 units at $7, and (3) 200 units at $8. (a1) Your answer is incorrect. Calculate the average unit cost. (Round answer to 2 decimal places, e.g. 15.25.)