A clock shows the time as half past three. If the hour hand moves at twice the speed of the minute hand, what time will it show after one hour?
Category: Brain · Difficulty: expert
Hint: Consider the relative speeds of the hands.
Answer
It will show four o'clock
Explanation
The hour hand moves 30 degrees per hour, while the minute hand moves 360 degrees. If the hour hand moves twice as fast, it will reach four o'clock.
This is a expert brain riddle — one of the harder riddles here. The answer is It will show four o'clock.
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