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It takes four painters working at the same rate 1.25 work-days to finish a job. If only three painters are available, how many work-days will it take them to finish the job, working at the same rate? Express your answer as a mixed number.

 Apr 23, 2020
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If it takes four painters 1.25 work-days to finish a job, one painter could finish the job in five days, which means that one painter does one-fifth of the job each day.

At the same rate, 3 painters can finish three-fifths of the job in one day.

To finish the whole job:  1 / (3/5)  =  5/3  =  1 2/3 days.

 Apr 23, 2020

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