<PRE><B>Question 615713</B>
It takes 10 working days for 15 men to finish a painting job in certain warehouse. If there were 10 painters available and 5 of them could only work for half-day, how many days will it take to finish the job?
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Job takes 10*15 = 150 man-days
5 full-time painters can do 5x man-days of the job
5 (1/2)-time painters can do (5/2)x man-days of the job
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Equation:
5x + (5/2)x = 150 man-days
(15/2)x = 150 man-days
x = 300/15 = 20 days total time to do the job
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Cheers,
Stan H.
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