Multiple Choice Questions on A can do 2 5 work in 8 days B can do 3 5 work in 18 days In how many days together they can do 3 4 w........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A can do 2 5 work in 8 days B can do 3 5 work in 18 days In how many days together they can do 3 4 w...........

Quantitative Aptitude ( CCS) Time and work
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    A can do 2/5 work in 8 days. B can do 3/5 work in 18 days. In how many days together they can do 3/4 work?

    8 days

    Incorrect Answer

    9 days

    Correct Answer

    7 days

    Incorrect Answer

    10 days

    Incorrect Answer
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    Explanation:

    Solution:
    A – 2/5 work in 8 days => total= 8*5/2= 20 days
    B- 3/5 work in 18 days => total- 30 days
    A+B together = 30*20/50 = 12 days
    hence 3/4 * 12=9 days

    By: Pranav Gupta
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