- A11:00 a.m.
- B12:00 noon
- C12:30 p.m.
- D1:00 p.m.
Step-by-Step Solution
They ring together after LCM(9, 12, 15) minutes. , so LCM = minutes = 3 hours. 9:00 a.m. + 3 hours = 12:00 noon.
Answer: B) 12:00 noon
Three bells ring at intervals of 9, 12 and 15 minutes. If they ring together at 9:00 a.m., when will they next ring together?
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