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 travel in opposite directions, how far apart will they be after 2 hours?
Answer: B. 120 km
In 2 hours, the car travels 120 km and the truck travels 80 km, so the total distance apart is 120 km + 80 km = 200 km.