60 men work take 40 days to complete a work. now suppose that is 60 men start working and every 5 days 5 people leave.in how many days will the work be complete.
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(60*40) men complete the work in 1 day
1man's 1 day work is 1/60*40
60 men's 5 day work is 5*(1/40)=1/8
remaining work (1-1/8)=7/8
as 5 men leave
55 men's 1 day work=55*(1/60*40)=11/60*8
now
11/60*8 work done by them 1day
7/8 work done by them [(60*8)/11]*(7/8)=420/11=38.18
so they complete in (38.18+5) days{5 day added bcoz alrdy 5dy work had been done}
43.18 day total work will be completed.
1man's 1 day work is 1/60*40
60 men's 5 day work is 5*(1/40)=1/8
remaining work (1-1/8)=7/8
as 5 men leave
55 men's 1 day work=55*(1/60*40)=11/60*8
now
11/60*8 work done by them 1day
7/8 work done by them [(60*8)/11]*(7/8)=420/11=38.18
so they complete in (38.18+5) days{5 day added bcoz alrdy 5dy work had been done}
43.18 day total work will be completed.
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