and walk along a circular track. They start at 5:00 a.m. from the same point in opposite directions. walks at an average speed of 5 rounds per hour and walks at an average speed of 3 rounds per hour. How many times will they cross each other between 5:20 a.m. and 7:00 a.m. ?
and walk along a circular track. They start at 5:00 a.m. from the same point in opposite directions. walks at an average speed of 5 rounds per hour and walks at an average speed of 3 rounds per hour. How many times will they cross each other between 5:20 a.m. and 7:00 a.m. ?