ents, mplete the assignment in an Excel file. Please note that this is an open book assignment so feel free to u ces. wen 180 minutes to complete the assignment. Please note that this is a single attempt submission. Question 1 10 pts Mainland Company has a contribution margin ratio of 45 percent and must sell 25,000 units at a price of $80 each in order to break even. a. Compute total fixed costs. . Compute variable cost per unit. Upload Choose a File