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