SOLUTION: If 8 men paint a school in 15 days, how many days will 12 men take to paint a similar school, assuming that they work on the same rate?

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Question 1059214: If 8 men paint a school in 15 days, how many days will 12 men take to paint a similar school, assuming that they work on the same rate?
Found 2 solutions by josgarithmetic, stanbon:
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
One job is "paint the school".
r is rate for one man.
x is the unknown number of days to paint.

8r%2A15=12r%2Ax

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If 8 men paint a school in 15 days, If 8 men paint a school in 15 days, how many days will 12 men take to paint a similar school, assuming that they work on the same rate? , assuming that they work on the same rate?
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# of men and # of days to paint are inversely related.
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d = k/m
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Solve for "k"::
15 = k/8
k = 120
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Equation:
d = 120/m
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how many days will 12 men take to paint a similar school, assuming that they work on the same rate?
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Ans: d = 120/12
# of days = 10
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Cheers,
Stan H.
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