SOLUTION: Three bike riders ride around a circular path. the first rider circles the path in 12 minutes, the second in 18, and the third in 24 minutes. if they all start at the same place at

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Question 263099: Three bike riders ride around a circular path. the first rider circles the path in 12 minutes, the second in 18, and the third in 24 minutes. if they all start at the same place at the same time, when will they all meet again at the starting point?
Found 2 solutions by drk, richwmiller:
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
We have three different numbers for our riders: 12, 18, and 24.
What we are looking for is a least common multiple.
LCM (12, 18, 24) = 72 minutes
So
the first rider travels 6 times around
the first rider travels 4 times around
the first rider travels 3 times around

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
I figure after 72 minutes
12*6=72
18*4=72
24*3=72