14. A firm has three groups of workers, performing exclusively the jobs of either cutting and planing, or chiselling and fitting, or finishing and polishing. It has received six orders which are to be completed and delivered at the earliest. The orders are marked as 1, 2, ... , 6, in the sequence in which they have been received. The manager insists that the jobs must be done in the order in which they were received. As a consultant, what would be your suggestion?

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Time (in hours) required 66544 56424 Job Cutting & planing Chiselling & fitting Finishing & polishing 1 12 6 7 10 23456 9 164 7 9