Multiple choice

If the hour hand and the minute hand of a clock coincide every 72 minutes, how much does the clock gain or lose everyday?

  1. 1 hour loss

  2. 45 minutes gain

  3. 2 hours loss

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a correct clock, the hands coincide every 65 and 5/11 minutes. If they coincide every 72 minutes, the clock is losing time. The gain/loss calculation requires comparing the actual interval to the standard interval.

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