2.

There are 5 cars which must be serviced at the NEWT”s automobile service center. NEWT”s does Body Work, Oil Changes, and Tune-ups. The shop is organized so that Body Work is always done before changing the oil (if needed), and Oil Change is done prior to any Tune-up (if needed). The cars are to be serviced as follows:

Operation

Car I.D.    Service Time(hours)      DUE DATE   Arrival

Body     Oil-      Tune       (hours)     Order

Work  Change   -Up

A  ——   0         2          3 ———”8 ——— 3rd

B  ——   4         0          2 ———”12 ——” 1st

C  ——   2         2          0 ———”5   ——” 4th

D ——    0         4          2 ———”8  ——” 2nd

E  ——   3         3          0 ———”13 ——” 5th

If multiple cars are waiting to be served at the same operation, at any point in time, the manager wants to use FCFS (first-come-first-served) to determine which car has processing priority at that particular operation. Process these jobs (8 points) and determine: (a)The average length of time that a car remains at NEWT”s? (b)The total time each car must spend waiting for service? (c)On average, how many cars you would expect to find at NEWT”s, at any point in time, while the center is operating; assume that, upon completion, each car immediately leaves the service center. (d)On average, how late is a car delivered to its owner.