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Discussion :: Time and Clock

  1.  What is the reflex angle between the hands of a clock at 4.30?

    2. A.

    70°
    B.

    150°
    C.

    205°
    D.

    315°

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    Answer : Option D

    Explanation :

    Angle traced by hour hand in 4 hr 30 min = 4(1/2) = 9/2 hr
    = (360/12) × (9/2) = 15 × 9 = 135°
    Angle traced by minute hand in 30 min = (360/60) × 30
    = 180°
    Reflex angle = 360° - [180° - 135°] = 360° - 145° = 315°

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