To complete 84 hours, how many relations will the hour hand of a clock take?
Answer & explanation
Correct answer: option 3
(the hour hand of a clock moves 360 degrees in 12 hours, which means it moves 30 degrees per hour)
So,
=> 84 hours ÷ 12 hours = 7
Since the hour hand moves 30 degrees per hour;
=> 7 hours × 30 degrees/hour = 210 degrees
Since the hour hand has moved 210 degrees, it will take 7 hours to complete this distance.
Thus, the correct answer is "7".