Multiple choice

Four bells toll at intervals of 4, 7, 12 and 84 seconds. The bells toll together at 5 O'clock. When will they toll again together?

  1. One minute 24 seconds past 5 O'clock

  2. 48 seconds past 5 O'clock

  3. Three minute 20 seconds past 5 O'clock

  4. 28 seconds past 5 O'clock

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The bells will toll together at a time which is a multiple of the four intervals 4, 7, 12 and 84.

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