Multiple Choice Questions on A can finish a work in 15 days and B can finish the work in 25 days Both of them start working toget........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A can finish a work in 15 days and B can finish the work in 25 days Both of them start working toget...........

Quantitative Aptitude ( CCS) Time and work
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    A can finish a work in 15 days and B can finish the work in 25 days. Both of them start working together but B leaves the work 3 days prior to the completion. After how many days B quit the work.

    7.5

    Correct Answer

    8

    Incorrect Answer

    8.5

    Incorrect Answer

    9

    Incorrect Answer
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    Explanation:

    Answer & Solution
    Answer – a) 7.5
    Solution:
    Let ‘X’ days they take to complete the whole work.
    (1/15 + 1/25)*(X-3) + 3* (1/15), X = 10.5 days. So he quits after 7.5 days.

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