SOLUTION: Sarah can paint a house in 6 days and John can paint that same huse in 4 days, how long will it take them both to paint that house working together?
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Question 319479: Sarah can paint a house in 6 days and John can paint that same huse in 4 days, how long will it take them both to paint that house working together? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Sarah can paint a house in 6 days and John can paint that same huse in 4 days, how long will it take them both to paint that house working together?
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Sarah DATA:
time = 6 day/job ; rate = 1/6 job/day
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John DATA:
time = 4 day/job ; rate = 1/4 job/day
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Together DATA:
time = x day/job ; rate = 1/x job/day
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Equation:
rate + rate = together rate
1/6 + 1/4 = 1/x
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2x + 3x = 12
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5x = 12
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x = 12/5 = 2.4 days (together time)
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cheers,
Stan H.
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