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6 July, 03:06

Candy takes 57 minutes to deliver all the paper whereas Tim takes 114 minutes. How long does it take them where they work together

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  1. 6 July, 03:55
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    - - Candy takes 57 minutes to do the whole job = = >

    She does 1/57 of the job every minute.

    - - Tim takes 114 minute to do the whole job = = >

    He does 1/114 of the job every minute.

    - - If they work together, they do (1/57 + 1/114) of the job every minute.

    We have to add those fractions.

    The least common denominator is 114.

    (1/57 + 1/114)

    = (2/114 + 1/114)

    = 3/114 = 1/38.

    Working together, Candy and Tim do 1/38 of the job every minute.

    So it takes them 38 minutes to do the whole job together.
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