6 bells commence tolling in 2,4,6,8 and 12 s respectively. In 30 min the number of times they ring together=?

1 Answer
Mark D.
Jul 21, 2018

75 times

Explanation:

2 and 4 both divide into 8
6 divides into 12

The lowest common denominator of 8 and 12 is 24

24, 48, 72, 96 and 120 are multiples of 24 so the bells would all ring together five times in two minutes. 30 minutes has 15 lots of two minutes so #15xx5=75#

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