Three friends P, Q and R go for morning walks around a ground. They start out together from the gate in the same direction, but walk at different speeds. R walks half as fast as P. Q walks 1.5 times faster than R. P takes 1 minute to take one round around the ground. If they all stop when R has finished 4 rounds, which of the options must be true?

Question

Accepted Answer

A: Between the start and the end (not counting the start and the end instances), P and R meet each other thrice. | B: Between start and the end (not counting the start and the end instances), P meets Q only once. | D: At the end, P, Q and R will reach the gate at the same time.