Subject

    Quantitative Aptitude

    Topic

    Clock

    At what angle the hands of a clock are inclined at 15 minutes past 5?

    ক)
    57.5 degrees
    খ)
    67.5 degrees
    গ)
    77.5 degrees
    ঘ)
    87.5 degrees

    Explanation

    Angle traced by hour hand in 214\frac{21}4 21 hrs = (36012×214)0\left(\frac{360}{12}\times\frac{21}4\right)^0 = 157102157\frac{1^0}2 Angle traced by min. hand in 15 min = (36012×15)0\left(\frac{360}{12}\times15\right)^0 = 90090^0 Required Angle = (15712)0−900\left(157\frac12\right)^0-90^0 = 6710267\frac{1^0}2

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