*2. NWAC Electronics manufactures four types of simple cables for a defense contractor.

Each cable must go through four sequential operations: splicing, soldering, sleeving, and inspection. The following table gives the pertinent data of the situation.

Minutes per unit Cable Splicing Soldering Sleeving IllSpeclion Unit revenue ($)

n i- SC320 10.5 2004 3.2 5.0 9.40

(- SC325 9.3 24.6 2.5 5.0 10.80

;) SC340 11.6 17.7 3.6 5.0 8.75 S070 8.2 26.5 5.5 5.0 7.80 Ie It Daily capacity (minutes) 4800.0 9600.0 4700.0 4500.0

.or nd

-< - :~~,~",. ~

The contractor guarantees a minimum production level of 100 units for each of the four cables.

(a) Formulate the problem as a linear programming model, and determine the optimum production schedule.