Question

Two bells ring at intervals of 78 seconds and 46 seconds. If they both ring at 10 O'clock in the morning together, after how many seconds will they ring together again?

Answer 1

Answer:

after 897 seconds

Step-by-step explanation:

the answer will come by taking LCM of the times

Answer 2

Answer:

1794 seconds.

Step-by-step explanation:

Given,

Two bells ring at intervals of 78 seconds and 46 seconds.

They both ring at 10 O'clock in the morning together.

To Find,

The time at which they will ring together again.

Concept:

We need to calculate the L.C.M. of 78 and 46.

Now,

Prime Factors of 78 = 2 x 3 x 13

Prime Factors of 46 = 2 x 46

Therefore, L.C.M of 46 and 78 is 2 x 3 x 13 x 23 = 1794

Hence, they will ring together again after 1794 seconds.

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