To run around a track A, B and C respectively take 27, 36 and 45 seconds. All of them start simultaneously at a point P on the track. The number of rounds made by C when all of them meet next at P is
LCM of 27,36 and 45 seconds is 540 seconds.
All of them will meet at P for every 540 seconds.
$$\therefore\ $$The number of rounds made by C when all of them meet next at P = $$\frac{540}{45}$$ = 12
Create a FREE account and get: