Question

    Walking 3/4 of his normal speed, Ravi was 21 minutes late in reaching his office. The usual time took to cover the distance between his home and office was:

    A 44 seconds Correct Answer Incorrect Answer
    B 1 hour 23 minutes Correct Answer Incorrect Answer
    C 1 hour 3 minutes Correct Answer Incorrect Answer
    D 1 hour Correct Answer Incorrect Answer

    Solution

    3/4 of speed = 4/3 of original time 4/3 of original time = original time + 21 minutes; 1/3rd of original time = 21 minutes; Thus, original time = 21 x 3 = 63 minutes or 1 hour 3 minutes

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