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27 May, 09:06

Manny can complete a sales route in 7 hours. Jane can do the same job in 3hours. How long will it take them to the job together

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  1. 27 May, 09:18
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    Step-by-step explanation:

    1/7x+1/3x=1

    3/21x+7/21x=1

    10/21x=1

    x=21/10 hour or 2 hours and 1 minute
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