The Neptune’s Den Machine Shop specializes in overhauling outboard marine engines. Some engines require replacement of broken parts, whereas others need a complete overhaul. Currently, five engines with varying problems are awaiting service. The best estimates for the labor times involved and the promise dates (in number of days from today) are shown in the following table. Customers usually do not pick up their engines early.Engine Time Since Order Arrived (days) Processing Time, Including Setup (days) Promise Date (days from now) Engine Time Since OrderArrived (days) Processing Time,Including Setup (days) Promise Date (daysfrom now) 50-hp Evinrude 7-hp Johnson 100-hp Mercury 50-hp Honda 75-hp Nautique 4 6 8 1 15 5 4 10 1 3 8 15 12 20 10 a. Develop separate schedules by using the SPT and EDD rules.b. Compare the two schedules on the basis of average flow time, percentage of past due jobs, and maximum past due days for any engine.

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The Neptune’s Den Machine Shop specializes in overhauling outboard marine engines. Some engines require replacement of broken parts, whereas others need a complete overhaul. Currently, five engines with varying problems are awaiting service. The best estimates for the labor times involved and the promise dates (in number of days from today) are shown in the following table. Customers usually do not pick up their engines early.
Engine Time Since Order Arrived (days) Processing Time, Including Setup (days) Promise Date (days from now)

Engine Time Since Order
Arrived (days)
Processing Time,
Including Setup (days)
Promise Date (days
from now)

50-hp Evinrude

7-hp Johnson

100-hp Mercury

50-hp Honda

75-hp Nautique

4

6

8

1

15

5

4

10

1

3

8

15

12

20

10

a. Develop separate schedules by using the SPT and EDD rules.
b. Compare the two schedules on the basis of average flow time, percentage of past due jobs, and maximum past due days for any engine.

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