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(b) Oman Steel Company is currently having five jobs to be completed in details of which is given in Table Q4(b). Using the following priority rules determine the order in which the jobs given in Table Q4(b) should be processed using the following rules; (i) Critical ratio [2] (ii) Least amount of Slack per operation [2] (ii) Johnson's rule [2] Table Q4(b) Jobs in the Days Remaining processing order they until due time (days) arrived) date Cutting Drilling R 2 S 3 2 T 5 3 4 U 9 5 3 V 4 3 1 7 1 [Total 16 marks]