Steel mills in three cities produce the following amounts of steel:
Location Weekly Production (tons)
A. ............Bethlehem 180
B. ..........Birmingham 260
C. .............Gary 310
740
These mills supply steel to four cities, where manufacturing plants have the following demand:
Location Weekly Demand (tons)
1. ................Detroit 160
2. ................St. Louis 120
3. ...............Chicago 170
4. ................Norfolk 220
670
Shipping costs per ton of steel are as follows:

Because of a truckers€™ strike, shipments are prohibited from Birmingham to Chicago. Solve thisproblem.

Transcribed Image Text:

4112 3-140 70 100 1-30 20 80 ro A. B. C.