Multiple choice

A watch was set accurately at 8:30 am and then lost 2 seconds every 5 minutes. What is the time that would be indicated by the watch at 6:30 pm on the same day?

  1. 5:56

  2. 6:00

  3. 6:23

  4. 6:26

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The time elapsed from 8:30 am to 6:30 pm is 10 hours, which is 600 minutes. Since the watch loses 2 seconds every 5 minutes, it loses (600 / 5) * 2 = 240 seconds, which equals 4 minutes. Therefore, the watch will show 6:26 pm.

AI explanation

The time elapsed from 8:30 am to 6:30 pm is 10 hours, which equals 600 minutes. By dividing 600 by 5, we find there are 120 intervals where the watch loses 2 seconds, resulting in a total loss of 240 seconds, or 4 minutes. Subtracting 4 minutes from 6:30 pm gives 6:26 pm. The result is 6:26.