Question

Two bells ring at an interval of 20 sec and 37 secs. After what least time in seconds, will both the bells ring together ? *

Answer 1

Answer:

20 = 2×2×5 = 2²×5¹

37 = 1×37

LCM = 20×37

= 740sec

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Answer 2

Answer:

740

Step-by-step explanation:

Given time intervals are 20 sec and 37 sec.

We have to find out the least time!

So, we have to take the LCM of these given internals.

20 = 2*2*5 = 2²*5

37 = 1*37

LCM =- 20*37 = 740 secs