A shipping company is buying new trucks. The high-capacity trucks cost $50,000 and hold 320 cases of merchandise. The low-capacity trucks cost $30,000 and hold 200 cases of
merchandise. The company has budgeted $1,080,000 for the new trucks and has a
maximum of 30 people qualified to drive the trucks. How many of each type of truck
should the company purchase to maximize the number of cases of merchandise that can
be shipped simultaneously?