March 29, 2017

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it takes 7 men 10 days to build a garage.Halfway through building the garage they get some help from 3 people and continue to work at the same rate

a)How long will it take to finish of the garage

b)How long did it take

  • math - ,

    7*10 man days
    After 5 days or 35 man days
    there are now 10 men to do 35 man days of work
    35/10=3.5 days to finish the work for a total of 8.5 days

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