Three men A, B and C working together can do a work in 30 days. They start the work together. A works for 3 days and takes rest on the fourth day, B works for 5 days and takes rest on the next two days and C works for 7 days and takes rest on the next three days. If A, B and C work at the same rate, in how many days will the work be completed?
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Step-by-step explanation:
when men A work = 3 days
he take rest on 4 th day
men B start work on the 4th day for 5 days
total days elapsed = 3 + 5 = 8
now , 30 - 8 = 22 days are left
now men B rest for 2 days
now only 20 days are left
Men C work on the second day for 7 days on which men B take rest
now 13 days are left
he takes rest for four days
now 9 days are left
the days in which the work completes is 30 - 9 = 21
the work get completes in 21 days
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