Question

1 Three phone, alaram rings at the interval of 20, 24, and 36 minutes. If they rang together atbieding when will they ring together again​

Answer 1

Answer:

At 360 minutes all the alarms will ring together

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Answer 2

Answer:

6 hours.

Step-by-step explanation:

n = time in total of that specific interval

1/20n + 1/24n + 1/36n = 1

Common multiple of 20, 24, and 36.

20: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 340, 360

24: 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360, 384

36: 36, 72, 108, 144, 180, 216, 252, 288, 324, 360, 396, 432, 468

LCM = 360

The phones will ring together after 360 minutes or 6 hours.