Question

Two bells ring together if the bells ring at every 3 min and 4 min respectively. After
what interval of time will they ring together again?
answer in paper pls
Best of luck ​

Answer 1

Answer:

You have one frequency going at 1/3 per minute and another at 1/4 per minute. The beat frequency will be 1/3 - 1/4 = 1/12 per minute i.e. they will coincide once every 12 minutes

Answer 2

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