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Question 774170: Sixty-Four men do a job in 15 days. How many more men will it take to do the job in 12 days?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39623)   (Show Source):
You can put this solution on YOUR website! 64 men, 1 job, 15 days.
1 man, 1 job,  days = 975 days.
The one-man rate is  jobs per day.
How many men, n, need 12 days to do this job?
 which is rate*time=jobs, and  is the rate for this number of men doing the job.
Solving for n, the count of the men in the 12-day group,
 men, but you cannot use a fraction of a man. Round-up makes more sense. Choose 82 men.
How many more men than 64 is n?
 more men.
Answer by MathTherapy(10555)  (Show Source):
You can put this solution on YOUR website! Sixty-Four men do a job in 15 days. How many more men will it take to do the job in 12 days?
A total of 80 men are needed to do the job in 12 days, so  more men are needed.
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