Question
1. Suppose you have the problem of delivering 500 lb. boxes from Washington, D.C. to Baltimore and are considering the purchase of a truck. You
1. Suppose you have the problem of delivering 500 lb. boxes from Washington, D.C. to Baltimore and are considering the purchase of a truck. You have in mind either a small truck (capacity of 1,500 lbs. and a cost of $2,00 a year) or a large truck (capacity of 4,000 lbs. and a cost of $10,000 a year). The cost of gasoline, maintenance, and the driver is $24 per round trip for either truck. You may assume that the trucks run at capacity, rather than taking partial loads.
- Write the total cost functions for each truck in terms of the quantity of boxes carried per year.
- At what quantity of boxes would you switch from a small truck to a large truck? N
- Suppose that for all trips in excess of 300 per year, there is an overtime cost of $10 per round trip. You expect to deliver 1200 boxes per year. What is the total annual cost of each mode of delivery? N
2. As an administrator of a law firm, you are trying to determine whether or not to outsource
the responsibilities of managing your administrative assistants. If you manage the responsibilities,
each assistant will cost your firm $50,000 a year. There is one assistant for every lawyer in your
firm. You will also be required to hire an administrator to manage the assistants at $75,000 a year
regardless of how many lawyers you have. Finally, you will also have to employ a temporary work
agency to fill in for any vacationing or sick assistant at a cost of $200,000 a year regardless of how
many lawyers you have. If, on the other hand, you outsource your operations, it will cost you
$60,000 a year for each assistant but there are no additional management or temporary employment
agency fees because the company with which you outsource takes care of this.
- Write total cost functions for each of the two options.
- What is the critical size of your law firm where you switch from on option to the other? N
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