Question

wo cars approach each other on a straight, level highway. Car A travels at 60 km/h and car B at 80 km/h. The driver of car B sees car A approaching at a speed of ________.
Two cars approach each other on a straight, level highway. Car A travels at 60 and car B at 80 . The driver of car B sees car A approaching at a speed of ________.
60 km/h
20 km/h
greater than 100 km/h
80 km/h
greater than 100 km/h

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