SOLUTION: On a model race track, two model cars leave the starting line at the same time and travel around tracks of equal lengths. One completes a circuit in 15 seconds, the other in 18 sec
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Question 1047333: On a model race track, two model cars leave the starting line at the same time and travel around tracks of equal lengths. One completes a circuit in 15 seconds, the other in 18 seconds.
How long will it be before they are together again at the starting line? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! What is the least common multiple?
and
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When the faster one has gone around
6 times, the slower one has gone
around 5 times
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In 90 seconds they are both at the starting line together
