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Question 5738: A crew of 6 men can complete the construction of an office in 60 days. In order to speed up the job the contractor increases the size of the crew by 1/3. How many days will he save by the addition of these men?
Answer by Abbey(339)   (Show Source):
You can put this solution on YOUR website! if the crew can do the job in 60 days, then each day, 1/60th of the job is complete.
each of the 6 men are performing 1/6th of the 1/60th of the work, or 1/360th of the work.
so if the crew is increased by 2 men (1/3 of 6 = 2), they are collectively performing 8/360th of the work.
if we divide 360 by 8, the result is 45 days.
The original construction was going to take 60 days, now it will take 45 days, so the amount of time saved will be 60-45 or 15 days.
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