Suppose that larimer company sells a product for $20. unit costs are as follows: direct materials $2.10 direct labor 1.25 variable factory overhead 2.00 variable selling and administrative expense 1.05 total fixed factory overhead is $56,590 per year, and total fixed selling and administrative expense is $38,610. required: 1. calculate the variable cost per unit and the contribution margin per unit. 2. calculate the contribution margin ratio and the variable cost ratio. 3. calculate the break-even units. 4. prepare a contribution margin income statement at the break-even number of units. enter all amounts as positive numbers.