One-half of a road construction project was completed by 6 workers in 12 days. Working at the same rate, what is the smallest number of workers needed to finish the rest of the project in exactly four days?
Source: mathcounts.org
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4 comments:
you would need 3 workers because it takes 2 workers to complete 12 days so you divide 12 by 4 because it is 12 days by 4 days, so you get 3 workers.
Venesa Gutierrez
period 2/3
10/17/08
The answer is 18 workers. There must be 18 workers because the number of days a job takes to complete varies directly to the amount of workers. In this case it takes 6 workers 12 days to finish the job, so if they are given 4 days to finish the job you must find the relationship between the day values. 4 is three times less than 12, and base on the information provided its takes 6 men 12 days to finish the job so it must take more men to finish the job in 4 days. 3 times 6 is 18, so it took 18 men to finish the job in 4 days.
Austin Kittrell
The answer to the question is 3 workers. If you divide 12 by 6 you get 2 workers per day, so if you divide 12 by 4 you get 3 workers.
Venesa Gutierrez
period 2/3
10/21/08
i have 18 workers i have no time to explain right now i will try to get it on later
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