Practice problem 3. Product Mix Decision - U-Develop makes metal and wood picture frames - The metal frames take 30 minutes of machine time/unit - The wood frames take 60 minutes of machine time/unit - Strategy if machine-hours (MH) are unlimited: - How many metal frames? - How many wood frames? - Reason: - Strategy if machine-hours (MH) are limited: - How many metal frames? - How many wood frames? - Reasn