Question
Harry took 6 hours to drive from Point Q to Point R while Mark took 3 hours to drive from Point R to Point Q. When they met each other, they were 35 km away from the midpoint of Point Q and Point R. What was Mark's speed?
3 m

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Harry took 6 hours to drive from Point Q to Point R while Mark took 3 hours to drive from Point R to Point Q. When they met each other, they were 35 km away from the midpoint of Point Q and Point R. What was Mark's speed?