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A alone can do a piece …

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A alone can do a piece of work in 12 days and B alone can do the same work in 15 days. A works alone for 4 days. In how many days will A and B together finish the remaining work?

    • Posted by Shoaib Md 7 years, 3 months ago

    CBSE > Class 08 > Mathematics
    • 0 answers
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