Question

What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from 3 to 9?

Answer 1

We can observe that in 1 complete clockwise revolution, the hour hand will rotate by ${360}^{\circ }$.
When the hour hand goes from 3 to 9 clockwise. It will rotate by 2 right angles or ${180}^{\circ }$ which is half of the ${360}^{\circ }$.
∴ Hour hand will rotate half of the clockwise rotation.