The Bargain Hut has 2400 cubic feet of storage space for refrigerators. Large refrigerators come in 60-cubic-foot packing crates and small refrigerators come in 40-cubic-foot crates. Large refrigerators

can be sold for a $250 profit and the smaller ones can be sold for $150 profit. How many of each type

of refrigerator should be sold to maximize profit and what is the maximum profit if:

a) If the manager wants to sell at least 50 refrigerators must be sold each month, how many large refrigerators and how many smaller refrigerators should he/she order each month to maximize profit?

b) At least 40 refrigerators must be sold each month.

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