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Question
What fraction of a clockwise revolution does the hour hand of a clock turn though, when it goes from 3 to 9?
Solution
We may observe that in 1 complete clockwise revolution, the hour hand will rotate by 360°.
When the hour hand goes from 3 to 9 clockwise, it will rotate by 2 right angles or 180º.
Fraction = `180^circ/360^circ = 1/2`
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