Kitchen Convenience Company manufactures two productslong dashtoaster ovens and bread machines. The following data are​ available: Toaster Ovens Bread Machines Sales price $ 100 $ 140 Variable costs $ 60 $ 50 Kitchen Convenience can manufacture six toaster ovens per machine hour and four bread machines per machine hour. Kitchen​ Convenience's production capacity is 1 comma 600 machine hours per month. What is the contribution margin per machine hour for bread​ machines?