Question
Luke took 10 hours to drive from Point K to Point L while Mark took 6 hours to drive from Point L to Point K. When they met each other, they were 30 km away from the midpoint of Point K and Point L. What was Mark's speed?
3 m

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Luke took 10 hours to drive from Point K to Point L while Mark took 6 hours to drive from Point L to Point K. When they met each other, they were 30 km away from the midpoint of Point K and Point L. What was Mark's speed?