M and N start at 5:00 a.m. from the same point on a circular track and walk in opposite directions. M walks at 5 rounds per hour and N at 2 rounds per...
Question
M and N start at 5:00 a.m. from the same point on a circular track and walk in opposite directions. M walks at 5 rounds per hour and N at 2 rounds per hour. How many times will they cross each other before 6:30 a.m. on the same day?