In a race, five runners P, Q, R, S, and T finished in the following order: P finished before Q but after R. S finished before T but after Q. What is the correct order of finishers?
A practical problem states that a car travels 60 km/h and a truck travels 40 km/h. If they start from the same point and the car is 30 minutes ahead, how far will they be from the starting point when they meet?