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    Question

    Sonal completed 30% of work alone and left the remaining

    work for Vinod who completed it in 28 days. If the total work got completed in 40 days, then find the time taken by Sonal and Vinod together to complete the whole work.
    A 12 days Correct Answer Incorrect Answer
    B 20 days Correct Answer Incorrect Answer
    C 18 days Correct Answer Incorrect Answer
    D 24 days Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    Total time taken by Vinod alone to complete the work = (28/7) x 10 = 40 days Total time taken by Sonal alone to complete the work = (12/3) x  10 = 40 days Let total work be 40 units. Hence, the Required time will be  = 40/2  = 20 days

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