A four-worker crew was assigned to install plumbing in a house. To accelerate the work, it was suggested that two additional crews (consisting of four workers each) be assigned to do the work.
a. If the initial estimate was that the four-worker crew could complete the work in 12 days, what is the best estimate of the completion time with the additional crews?
b. What is the estimated labor cost of the change in worker assignments if all workers are paid $20 per hour?
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