Question
Christopher and Nathan started driving from the same flat but in opposite directions along a straight road. After driving for 2 hours, they were 320 km apart. Christopher's average speed was 65 km/h. What was Nathan's average speed?
2 m

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Christopher and Nathan started driving from the same flat but in opposite directions along a straight road. After driving for 2 hours, they were 320 km apart. Christopher's average speed was 65 km/h. What was Nathan's average speed?