Question: Marcelo has decided to start a new business importing coffee from his native Brazil. He wants to make three blends – Lazy Sunday Morning, Pick-Me-Up, and Exam All Nighter. There are four types of beans he can use, with levels I, II, III, and IV of caffeine. Lazy Sunday can have no more than 25% of beans III and IV collectively. Pick-Me-Up should have 75% of its beans come from types II and III. Exam All Nighter should be at least 60% type IV. The cost of the beans is $2.50, $2.75, $2.00, and $3.50 per pound, respectively. There are 500 pounds of each bean type available, except type IV, for which there are only 300 pounds available. If one pound of beans yields 30 cups and the coffee sells for $1.25, $1.50, and $1.75 per cup for each blend, how can Marcelo maximize his profits?