EduGoog

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

Option:
A. 145
B. 155
C. 157
D. 134
E. none of the above
Answer: B . 155

Justification:

Angle traced by hour hand in 12 hrs = 360º.

 

Angle traced by hour hand in 5 hrs 10 min.  i.e., 31/6 hrs 36012*316°">(36012*316)?

= 155º

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