An accurate clock indicates 8 O' clock in the morning. Through how many degrees the hour hand turns when the clock indicates 3 O' clock in the afternoon?
Question
An accurate clock indicates 8 O' clock in the morning. Through how many degrees the hour hand turns when the clock indicates 3 O' clock in the afternoon?
Solution
The hour hand of a clock moves 360° in 12 hours.
So, in 1 hour, the hour hand moves 360°/12 = 30°.
From 8 o'clock in the morning to 3 o'clock in the afternoon is 7 hours.
Therefore, the hour hand moves through 7 * 30° = 210° in 7 hours.
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