Question

Two watches, one set accurately and the other delayed by 9 minutes per hour compared to the correct time.

If we set both watches to 8:00 AM, after how many hours will the delayed watch meet the accurate watch again?

Submit only a number

Answer 1

Answer: To determine when the delayed watch will meet the accurate watch again, we need to find the number of hours it takes for the delayed watch to catch up by 9 minutes.

Since the delayed watch falls behind by 9 minutes per hour, it will catch up by 9 minutes after every hour. Therefore, it will take 1 hour for the delayed watch to catch up by 9 minutes.

Hence, the delayed watch will meet the accurate watch again after 1 hour.

Submit the number: 1