Question
Harper and William started driving from the same villa but in opposite directions along a straight road. After driving for 4 hours, they were 500 km apart. Harper's average speed was 60 km/h. What was William's average speed?
2 m

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Harper and William started driving from the same villa but in opposite directions along a straight road. After driving for 4 hours, they were 500 km apart. Harper's average speed was 60 km/h. What was William's average speed?