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A clock is started at noon. By 10 minutes past 5, the hour hand has turned through:

A. 145º

B. 150º

C. 155º

D. 160º

Answer: Option C

Solution(By Examveda Team)

Angle traced by hour hand in 12 hrs = $${360^ \circ }$$
Angle traced by hour hand in 5 hrs 10 min. i.e.,
$$\eqalign{ & \frac{{31}}{6}{\text{hrs}} = {\left( {\frac{{360}}{{12}} \times \frac{{31}}{6}} \right)^ \circ } \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = {155^ \circ } \cr} $$

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Comments ( 2 )

  1. Tshering Dhendup
    Tshering Dhendup :
    10 months ago

    5hrs 10min = 5*60 min +10 min =310min
    310/60=31/6 min

  2. Felix Kasper
    Felix Kasper :
    2 years ago

    How do you get 31 by 6 sir

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