if a typists 6 hours a day can take twelve days to complete the manuscript of book then how many days will 4 typists for working 7 hours a day can take to do the same job?
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If a typist works for 1 hour it takes him
(12*6) 72 days.
If a typist works for 7 hours a day it takes him(72/7) days.
So if 4 typist work for 7 hours a day It will take 72/28) = 2.55 days = 2 days and 12 hours(approx.)
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