SOLUTION: Three people can complete a task in 3hr. 20min. How long would it take 4 people to complete the same task if they worked at the same rate as the other 3?

Question 792203: Three people can complete a task in 3hr. 20min. How long would it take 4 people to complete the same task if they worked at the same rate as the other 3?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Three people can complete a task in 3hr. 20min. How long would it take 4 people to complete the same task if they worked at the same rate as the other 3?
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Note: 3hr 20 min = 3 1/3 = 10/3 hours.
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# of people and amt. of time are inversely related:
t = k/p
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Solve for "k" using "three people can complete a task in 3hr. 20 min".
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10/3 = k/3
k =10
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Equation:
t = 10/p
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How long would it take 4 people to complete the same task if they worked at the same rate as the other 3?
t = 10/4
t = 5/2 = 2 1/2 hrs or 2hrs 30min
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Cheers,
Stan H.
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