9 - 11 The Krampf Lines Railway Company specializes in coal handling. On Friday, April 13, Krampf had empty cars at the

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9 - 11 The Krampf Lines Railway Company specializes in coalhandling. On Friday, April 13, Krampf had empty cars at thefollowing towns in the quantities indicated:
TOWN SUPPLY OF CARS
Morgantown 35
Youngstown 60
Pithsburgh 25
TABLE FOR PROBLEM 9-11
TO COAL VALLEY COALTOWN COAL JUNCTION COALSBURG
FROM
MORGANTOWN 50 30 60 70
YOUNGSTOWN 20 80 10 90
PITTSBURGH 100 40 80 30
By Monday, April 16, the following towns will need cal cars asfollows:
TOWN DEMAND FOR CARS
Coal Valley 30
Coaltown 45
coal Junction 25
coalsburg 20
Using a railway city-to-city distance chart, the dispatcherconstructs a mileage table for the precedeing towns. The result isshown in the table above. Minimizing total miles over which carsare moved to new locations, compute the best shipment of coalcars.