Question

2. Four bells ring at intervals of 3, 7, 12 and 14 seconds respectively. At what
time will they ring together if they start ringing at 7 a.m ?​

Answer 1

Answer:

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Step-by-step explanation:

LCM of 3, 7, 12, 14 = 84(2 * 2 * 3 * 7)

LCM of 3 = 3

LCM of  7 = 7 

LCm of 12 = 2*2*3 

LCM of 14 =  2*7 

So, 84 minutes = 60 + 24 

                         = 1hr 24 minutes.

                   Given 7 a.m add 1 hr 24 minutes to it, we get

                  = 8.24 AM

Hope this helps!