In a school the duration of a classroom in the primary section is 40 m – InterviewSolution

1.	In a school the duration of a classroom in the primary section is 40 minutes and in the secondary section it is 1 hour. If both section begin school at 10 a.m. when will the two bells ring together again?
Answer» FIND the lcm of 40 and 60it MEANS after 2 hours 9+2=11 a.m.

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