Problem 16-18 The Budd Gear Co. specializes in heat-treating gears for automobile companies. At 8:

Problem 16-18

The Budd Gear Co. specializes in heat-treating gears for automobile companies. At 8:00 a.m., when Budd’s shop opened today, five orders (listed in order of arrival) were waiting to be processed.

  OrderOrder Size

(units)

Per Unit Time in

Heat Treatment

(minutes/unit)

Due Date

(min. from now) A16       4           160B6       12           200C10       3           180D8       10           190E4       1           220

a.If the due date rule is used, what sequence should be used?

  The sequence is(Click to select)A-C-D-B-E, B-A-C-D-E, C-A-B-E-D, D-E-A-C-B, E-A-B-C-D

.

b.What will be the average job tardiness? (Round your answer to 2 decimal places.)

  Average job tardiness?

c.What will be the average number of jobs in the system? (Round your answer to 2 decimal places.)

  Average number of jobs?

d.Would the Shortest processing time rule produce better results in terms of average job tardiness? (Round your answer to the nearest whole number.)

  (Click to select)YesNo

new average job tardiness is minutes?