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?
Two cars start from the same point and travel in opposite directions. If car A travels at 60 km/h and car B at 80 km/h, how far apart will they be after 2 hours?