Mathematics, 22.10.2019 18:00 redsakura

To do a job alone, it would take dan 6 hours, fran 2 hours, and stan 3 hours. how long would it take to do the job if they all worked together? show process .

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To do a job alone, it would take dan 6 hours, fran 2 hours, and stan 3 hours. how long would it take...

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