Devlin produces two models of built-in outdoor gas grills. Production information for both products: Summit $800/unit Selling Price Variable manufacturing cost Machine hours required to produce Prestige $1,000/unit $625/unit 5 MH $560/unit 2 MH Sales demand per day up to 200 units Up to 250 units Devlin's production plant has a capacity of 600 machine hours per day. What is the optimal product mix that Devlin should produce to maximize operating income