Multiple Choice Questions on By walking at 3 4th of his usual speed a man reaches office 20 minutes later than usual What i........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

By walking at 3 4th of his usual speed a man reaches office 20 minutes later than usual What i...........

Quantitative Aptitude ( CCS) Time & distance
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     By walking at 3/4th of his usual speed, a man reaches office 20 minutes later than usual. What is his usual time?

    60 min

    Correct Answer

    50 min

    Incorrect Answer

    30 min

    Incorrect Answer

    40 min

    Incorrect Answer
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    Explanation:

    3/4 of a man's usual speed means, he takes 4/3 of his usual time to cover the same distance, 
    i.e. he takes 4/3 – 1 = 1/3 time extra.
    Given 1/3 time is 20 minutes
    Usual time = 20 * 3 = 60 minutes.

    Hence, option 1 is the correct answer.

    By: Amit Kumar
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