Question: A small city has four elementary schools, each with a capacity for 400 students. Students homes are scattered in five areas of the city, North,
A small city has four elementary schools, each with a capacity for 400 students. Students homes are scattered in five areas of the city, North, South, East, West, and Central, and students take a bus daily to one of the four schools. The table shows the average time taken (in minutes) for buses to travel from each district to each school.
| District | School A | School B | School C | School D | Student Population |
| North | 12 | 23 | 35 | 17 | 250 |
| South | 26 | 15 | 21 | 27 | 340 |
| East | 18 | 20 | 22 | 31 | 310 |
| West | 29 | 24 | 35 | 10 | 210 |
| Central | 15 | 10 | 23 | 16 | 290 |
Formulate a model to describe this situation and use Excel to determine the number of students that should be assigned to each school from each district to minimize overall total student travel time.
The school board has decided that it would like the enrollments from each school to be evenly balanced to avoid overcrowding at any one school. This may have the effect of increasing total travel time since it is no longer optimized.
Reformulate the model to determine the number of students traveling from each district and the total travel time.
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