Subject

    Quantitative Aptitude

    Topic

    Clock

    At what time between 5.30 and 6 will the hands of a clock be at right angles?

    ক)
    (43 + 5/11) min past 5
    খ)
    (43 + 7/11) min pats 5
    গ)
    5
    ঘ)
    7

    Explanation

    At 5 o'clock, the hands are 25 min. spaces apart. To be at right angles and that too between 5.30 and 6, the minute hand has to gain (25 + 15) = 40 min. spaces. 55 min. spaces are gained in 60 min 40 min. spaces are gained in 6055×40\frac{60}{55}\times40 min

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