Question #96076
Mr A blows every 15 minutes, Mr B every 20 minutes,Mr C every 30minutes, Mr D every 40 minutes, Mr E every 40minutes, if they all blow at 10pm when next will they all blows
1
Expert's answer
2019-10-08T09:27:21-0400

The Least Common Multiple for 15, 20, 30 and 40 is 120.

So, the all blow up after 120 min. from 10 pm, i.e. at 12 pm.


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