If X, Y, Z can do a piece of work in 8 days, 12 days and 15 days respectively, how long will they take, if they work together? plz say the correct answer with steps.
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Step-by-step explanation:
work done by X, Y, Z = 8, 12, 15
work done by all together = average work done of three
therefore work done = (8+12+15)/3
=35/3
=11.66
that is 13 days 18 hours (24 hours = 1 day)
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