The B W Harris Company is a steel fabrication company that has recently negotiated a contract to supply T. Breuner Industries with steel trusses on a monthly basis. It employs both skilled workers and apprentices. The average output of a skilled worker is three trusses per hour; apprentices average two trusses per hour. Including benefits, each skilled worker costs the BWHarris Company $3840 per month, and each apprentice costs Harris $2400 per month. The B W Harris Company is a "union shop" and has negotiated the following agreements with the union which requires that the workforce to be used for the contract with T. Breuner Industries:

At least 25 skilled workers will be used.

At least 15 more skilled workers than apprentices will be used.

The maximum budget for labor costs is $200,000.

Assume each worker works 160 hours per month and both skilled workers and apprentices can be assigned "parttime" so that fractional values are permitted.

Required: Solve this LP model by using Excel and computer