SOLUTION: Word problem: Whitney and Kim are in a bicycle race on a circular track. They start at the same place and travel in the same direction. Whitney completes a revolution every 40 s

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Question 762203: Word problem:
Whitney and Kim are in a bicycle race on a circular track. They start at the same place and travel in the same direction. Whitney completes a revolution every 40 seconds and Kim completes a revolution every 48 seconds. How long will it take them before they reach the starting point again simultaneously?
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
A couple ways of figuring this out.
The most basic is keep adding each one until they both are the same.
For example:
40+40+40+40++40+40=240
48+48+48+48+48=240
There we go, in 240 seconds they will both reach the starting point simultaneously.
Make sense?
RJ
www.math-unlock.com