<PRE><B>Question 317219</B>
2 runners are running a track one runner runs it in 24 min,
 the other runner in 36 minutes when will they both be at the same spot?
:
Prime factor both values
24: 2*2*2*3
36: 2*2*3*3
LCM 2*2*2*3*3 = 72 minutes
:
one runner completes 3 laps
one runner completes 2 laps</PRE>