Justin and Keiko walk around a track. Justin walks each lap in
minutes. Keiko walks each lap in
minutes. The two of them begin at the starting line at the same time. They walk until they meet again at the starting line.
How many laps does Justin complete?
How many laps does Keiko complete?
How much time does it take for them to meet again at the starting line?
They are back at starting line:
J: 10 20 30 40 minutes
K: 6 12 18 24 30 36
So they meet again at 30 minutes at the starting line..... I think you can take it from here.......