The Taylor Machine Shop rebores engine blocks. Currently, five engine blocks are waiting for processing. At any time, the company has only one engine expert on duty who can do this type of work. The engine problems have been diagnosed, and the processing times for the jobs have been estimated. Expected completion times have been agreed upon with the shops customers. The accompanying table shows the current situation.

Find the optimal sequence if CR rule is used.

(Hint: the jobs are processed in the increasing order of their critical ratios, First: we compute the critical ratios starting at time t = 0, Second: select the job with the lowest CR, Third: we update the time to the processing time of the selected job, Fourth: we select the job with the lowest CR, REPEAT)

PLEASE SHOW ALL YOUR WORK THANKS YOU SHOULD HAVE 4 ITERATIONS.

Engine Block Processing time (days) Due date (days) Ranger 8 10 Explorer 6 12 Bronco 15 20 Econoline 150 3 18 Thunderbird 12 22