SOLUTION: train a makes a stop every 6 mins and train b makes a stop every 8 mins if they leave at the same time, 4:00, when is the next time they will leave at the same time ?

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Question 869988: train a makes a stop every 6 mins and train b makes a stop every 8 mins if they leave at the same time, 4:00, when is the next time they will leave at the same time ?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The LCM of 6 and 8 is 24 (6*8 = 48, then divide by the GCF 2 to get 48/2 = 24)


So because the LCM is 24, this means they will leave at the same time every 24 minutes. They leave at the same time at 4:00, so they will leave at the same time at 4:24 and then again at 4:48, etc (keep adding on 24 minutes).