Civil Service Exam Reviewer · Word Problems · hard
What is the smaller angle between the hour and minute hands of a clock at 10:10?
- 120°
- 115°
- 245°
- 130°
Answer
B. 115°
Solution
Angle = |30H − 5.5M| = |30(10) − 5.5(10)| = 245°; the smaller angle is 360° − that = 115°. (The hour hand moves 0.5° per minute.)
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