Percentage labor

A certain service station uses a team of 3 mechanics in one repair station to work on each car that needs repair. This team can repair cars at a rate of 9 per day. Cars arrive for repairs at the station at the rate of 4.5 per day. The service station owner has decided that this team is not very efficient in terms of labor usage. To remedy the problem, the owner is going to reduce the number of people on the team from 3 to 2 and expects that team of 2 will be able to repair vehicles at the rate of 6 per day. The reduction will reduce the service station expenses by $100 per day. On the other hand, the owner believes that the cost to the service station customers of not having their cars... click for more

Critical Path

Attached is the document with the table. Project planners have sought the experienced judgment of various knowledgeable engineers, supervisors and vendors and have developed the time estimates shown below for an electric plant construction project. Precedence is also given (For example, activity E must follow activity B). Activity Description Precedence Time A Design plant 12 B Select site A 8 C Select vendor A 4 D Select personnel A 3 E Prepare site B 12 F Build generator C 18 G Prepare manual C 5 H Install generator E,F 4 I Train operators D,G 9 J License plant H,I 8 a) What is the critical path and its length? Show work. b) If I can ... click for more

Capability of a process

An accounting firm is trying to understand the capability of its process to review certain types of account audits. They know that on average it takes 10 hours to complete one of these audits, but due to variation, they promise the customer that it will be done in 15 hours. If the standard deviation of this audit process is 2.5 hours (and normality is assumed) a) What is the capability of this process? b) What is the percentage of audits that will take longer than 15 hours?

Capacity of a Process

Product P is made in-house by assembling two parts (parts 1 and 2): Part 1 is first processed on machine A for 15 minutes per unit and then processed on Machine B for 10 minutes per unit. Part 2 is processed on machine C for 20 minutes per unit. An assembler then assembles the two parts, with the assembly operation taking 15 minutes. a. Draw a process flow chart clearly identifying potential buffers, activities, and resources. b. What is the capacity of this process? Assume one machine of each type and one assembler. c. Assume that the assembler has come up with an innovation that has reduced assembly time from 15 to 10 minutes. As a result, the theoretical capacity of the proces... click for more

Capacity Planning

I need to determine the process utilization of your "loan processing" activity. Below are the following processes in the listed sequence, and the time required: A. Processing customer credit application (performed by a credit analyst over the internet): 3 minutes B. Waiting for credit analysis (Wait room marked "Wait for Credit Analysis") C. Analyzing creditor data by Loan Officers: credit report, outstanding loans etc. (Loan Officer "A" -10 minutes, or Loan Officer "B" -6 minutes). Assume, Loan Officer "A" and Loan Officer "B" working simultaneously. D. Waiting for Manager Approval/Commitment Letter (Wait Room marked "Wait for Manager Approval/Commitment Letter") E. Prepare Com... click for more