Uberya Towing Services repair vehicles that break down at an average 8 vehicles per day. The mechanic crew can service an average of 11 vehicles per day. The crew cost is approximately Php 900 per day. The cost associated with lost productivity from the breakdown is estimated at Php 500 per vehicle per day. if an additional Service crew is added, Which is cheaper, the existing system with one service crew, or a revised system with two service crews?

Uberya Towing Services repair vehicles that break down at an average 8 vehicles per day. The mechanic crew can service an average of 11 vehicles per day. The crew cost is approximately Php 900 per day. The cost associated with lost productivity from the breakdown is estimated at Php 500 per vehicle per day. if an additional Service crew is added, Which is cheaper, the existing system with one service crew, or a revised system with two service crews?

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter4: Linear Programming Models

Section4.8: Data Envelopment Analysis (dea)

Problem 42P

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Uberya Towing Services repair vehicles that break down at an average 7.5 vehicles per day. The mechanic crew can service an average of 10 vehicles per day. The crew cost is approximately Php1500 per day. The cost associated with lost productivity from the breakdown is estimated at Php406 per vehicle per day. What is the Expected or Total Cost (Waiting +Service Cost)? If an additional Service crew is added, which is cheaper, the existing system with one service crew, or a revised system with two service crews?
A fleet repair facility has the capacity to repair 800 trucks per month. However, due to scheduled maintenance of their equipment, management feels that they can repair no more than 600 trucks per month. Last month, two of the employees were absent several days each, and only 400 trucks were repaired. What are the utilization and efficiency of the repair shop?
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Show your calculations. Determine the utilization and the efficiency for each of these situations: A car wash operation processes an average of 60 cars per day. The operation has a design capacity of 100 cars per day and an effective capacity of 80 cars per day. A drive through fast food restaurant has been designed to handle 120 customers during lunchtime (12 to 2 PM) each day, but currently averages only 65 drive through customers at that time. Prior to the recession, when lines of customers were long, the restaurant actually handled a maximum of only 90 customers. Would you say that systems that have higher efficiency ratios than other systems will always have higher utilization ratios than those other systems? Explain.
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A computer repair service has a design capacity of 80 repairs per day. Its effective capacity, however, is 64 repairs per day, and its actual output is 62 repairs per day. The manager would like to increase the number of repairs per day. Critically examine these factors and explain why you would recommend that the manager investigate: quality problems, absenteeism, or scheduling and balancing?
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