pyq/2016/csat/75

A and B walk around a circular park. They start at 8 am from the same point in the opposite directions. A and B walk at a speed of 2 rounds per hour and 3 rounds per hour respectively. How many times shall they cross each other after 8:00 am and before 9:30 am?

(A) 7

(B) 6

(C) 5

(D) 8