Three bells ring at intervals of 4, 7, and 14 minutes. All three rang at 6am. When will they ring together again
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if they all ran at 6 a.m.
then....
1st bell - 6:00 , 6:04 , 6:08 , 6:12 , 6:16 , 6:20 , 6:24 , 6:28
2nd bell - 6:00 , 6:07 , 6:14 , 6:21 , 6:28
3rd bell - 6:00 , 6:14 , 6:28
they will ring together again after 28 minutes i.e. at 6:28
then....
1st bell - 6:00 , 6:04 , 6:08 , 6:12 , 6:16 , 6:20 , 6:24 , 6:28
2nd bell - 6:00 , 6:07 , 6:14 , 6:21 , 6:28
3rd bell - 6:00 , 6:14 , 6:28
they will ring together again after 28 minutes i.e. at 6:28
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