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Discussion :: Time and Clock

  1.  A clock is started at noon. By 20 minutes pas 4, the hour hand turned through:

    2. A.

    90°
    B.

    110°
    C.

    130°
    D.

    155°

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    Answer : Option C

    Explanation :

    Angle traced by hour hand in 12 hrs = 360°
    Angle traced by hour hand in 4 hrs 20 mins
    i.e., 4(20/60) = 4(1/3)
    = 13/3 hr
    = 13/3 × (360/12) = 130°

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