Required: 1. What is the contribution margin per hour of machine time for each type of sweatshirt? Do not round intermediate calculations. Round your answers to the nearest cent. Contribution Margin Swoop $ 53.33 Rufus $ 42.22 2. What is the optimal mix of sweatshirts? Do not round intermediate calculations. Round your answers to the nearest whole number. If an amount is zero, enter "0". Swoop Optimal Mix 70,000 Rufus units 0 units 3. What is the total contribution margin earned for the optimal mix? Do not round intermediate calculations. Round your answer to the nearest dollar.