I have the following three products. In the past few months I have found I don't have time to make them as much as I want. Also when I make only one product I am left with some unsold. What is the contribution margin for trucks before considering the limiting resource. Hour I can work in a 100 week Cars Trucks Bikes Product Market Demand Selling Price Variable costs 60 40 70 50 100 80 Hour required per unit 1