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A can do a piece of …

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A can do a piece of work in 15 hour while B can do it in 12 hours . How long will both take to do it workingh together ?

    • Posted by Tejaswi Singh 7 years, 11 months ago

    CBSE > Class 09 > Communicative English (101)
    • 1 answers

    Tejaswi Singh 7 years, 11 months ago

    6 hours 40 minutes

    2Thank You

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