Multiple Choice Questions on A can finish a piece of work in 24 days B is 20 more efficient than A and C is 25 more efficient tha........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A can finish a piece of work in 24 days B is 20 more efficient than A and C is 25 more efficient tha...........

Quantitative Aptitude ( CCS) Time and work
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    A can finish a piece of work in 24 days. B is 20% more efficient than A and C is 25% more efficient than B. Find the time B and C will take to finish the work?

    7days

    Incorrect Answer

    6days

    Incorrect Answer

    8days

    Incorrect Answer

    9days

    Correct Answer
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    Explanation:

    Answer
    9days
    Explanation :
    A= 1/24
    B = 120/100(1/24) = 1/20
    C= 125/100(1/20) = 1/16
    B+C =(1/20) + (1/16) = 16+20/320 = 36/320 = 8.88 = 9 days

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