HCF & LCM · Question 4 · Easy

Three temple bells ring at intervals of 6, 8 and 12 minutes. If they ring together at 9:00 AM, when will they next ring together?

  1. 9:24 AM
  2. 9:12 AM
  3. 9:48 AM
  4. 9:36 AM
Answer and explanation

Answer: A. 9:24 AM

Explanation: They ring together again after LCM(6, 8, 12) = 24 minutes, that is at 9:24 AM.

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