Rhodry Oishi is a restaurant that serves Japanese food. They have preparation chefs who work before the restaurant opens to prepare some items. The business has only a certain number of hours that can be worked by the preparation chefs each day. They have the choice of making 2 products and must evaluate the following information to help them select which product they will make Sashimi platters Sushi and nigiri platters Projected sales (units) 20 20 Sales price per unit $45 $45 Materials per unit $12 $8 Labour per unit $1 $2 Fixed overhead $400 $400   Calculate the total contribution margin for the product that should be made.数值题