Two bike riders ride around a circular track, 1st rider completes one round in 12 minutes, the second rider completes a round in 16 minutes. If they start at the same time and fo in the same direction, how many turn before they meet at the same place again.

Answer 1

LCM(12,16) = 48
so, 48/12=4 and 48/16=3 laps, respectively.

Answer 2

thank you so very much, it is really appreciated