Question

Student Premier Painters (SPP) has six house painting jobs in a particular neighborhood. The houses vary in size, condition, and painting requirements, but each house must be prepped (cleaned, sanded, and primed) first, before it is painted. The relevant information is given. Johnson’s rule should be used to minimize makespan.

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Calculate the mean job flow time associated with this sequence.

Calculate the average number of jobs in the system with this sequence.

(Round answer to 2 decimal places, e.g. 1.75.)