Subject

    Quantitative Aptitude

    Topic

    Clock

    At 3.40, the hour hand and the minute hand of a clock form an angle of:

    ক)
    110
    খ)
    120
    গ)
    130
    ঘ)
    140

    Explanation

    Angle traced by hour hand in 12 hrs. = 360º. Angle traced by it in 113\frac{11}3 hrs = (36012×113)0\left(\frac{360}{12}\times\frac{11}3\right)^0 = 1100110^0 Angle traced by minute hand in 60 min. = 3600360^0 Angle traced by it in 40 min = (36060×40)0\left(\frac{360}{60}\times40\right)^0 = 2400240^0 Required angle (240 - 110)º = 1300130^0

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