Question

three bells are ringing continuously at 24, 30 and 36 minutes respectively. at what time will they ring together again if they ring simultaneously at 9am​

Answer 1

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Answer:

3 p.m.

Step-by-step explanation:

As the bells ring at different time intervals, we have to find the L.C.M. of the 3 numbers given.

So, the L.C.M. of the given numbers (24, 30, 36) = 360 minutes.

Meaning these bells ring together every 360 minutes.

Converting 360 minutes to hours:

= 360/60

= 36/6

= 6 hours

So now add these 6 hours to 9 p.m.

The three bells will ring together again at

= 9 a.m. + 6 hours

= 3 p.m.

Answer 2

We are given that Three bells are ringing continuously at intervals of 30,36 and 45 minutes respectively. So after 180 minutes they ring together . So, after 3 hours they ring together. Therefore they all ring together again if they ring simultaneously at 8 a.m. at 11:00 a.m.

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