Multiple Choice Questions on A B and C can complete a piece of work in 10 12 and 15 days resp A left the work 5 days before the c........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A B and C can complete a piece of work in 10 12 and 15 days resp A left the work 5 days before the c...........

Quantitative Aptitude ( CCS) Time and work
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    A, B and C can complete a piece of work in 10, 12 and 15 days resp.A left the work 5 days before the completion of the work  B left two days after A had left the work. Find the number of days required to complete the work?

    7 days

    Correct Answer

    5 days

    Incorrect Answer

    10 days

    Incorrect Answer

    12 days

    Incorrect Answer
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    Explanation:

    Solution:
    Total work = 60 units
    A takes =  6 units/day
    B takes = 5 units/day
    C takes = 4 units/day
    Now ,
    (x-5)/10 + (x-3)/12 + x/15 = 1
    => x = 7 days

    By: Pranav Gupta
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