Multiple choice

For each hour a watch is going slow by 30 seconds. Now the time is 8 a.m., when the clock is set right. What will be the time in watch when the actual time is 8 p.m.?

  1. 7:48 PM

  2. 7:54 PM

  3. 7:52 PM

  4. None of the above

  5. Data inadequate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

From 8 a.m. to 8 p.m. is 12 hours. The watch loses 30 seconds per hour. Total loss = 12 * 30 = 360 seconds = 6 minutes. Actual time is 8 p.m., so watch time is 7:54 p.m.

AI explanation

Between 8:00 am and 8:00 pm, there is a duration of 12 hours. Since the watch loses 30 seconds per hour, the total time lost is 12 times 30 seconds, which equals 360 seconds or 6 minutes. Therefore, when the actual time is 8:00 pm, the watch will show 6 minutes less. The time on the watch will be 7:54 PM.

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