8 people can do a work in 15 daysafter 5 days work completed another 16 people were added. the remaining work will finish in
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Explanation:
15 people work 12 days to finish the job, therefore
15*12= 180 days will be required to complete it by 1 people.
15*4= 60 days of work completed assuming it was all done by 1 person.
180–60=120 days of work left assuming it will be done by 1 person.
120/20 = 6 days when 20 people working together
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