8 The Chicago board of education is taking bids on the city’s four school bus routes. Four companies have made the bids in Table 57.

a Suppose each bidder can be assigned only one route.

Use the assignment method to minimize Chicago’s cost of running the four bus routes

b Suppose that each company can be assigned two routes. Use the assignment method to minimize Chicago’s cost of running the four bus routes. (Hint:
Two supply points will be needed for each company.)

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