Question
Vaidev took 9 hours to drive from Point R to Point S while John took 6 hours to drive from Point S to Point R. When they met each other, they were 57 km away from the midpoint of Point R and Point S. What was John's speed?
3 m

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Vaidev took 9 hours to drive from Point R to Point S while John took 6 hours to drive from Point S to Point R. When they met each other, they were 57 km away from the midpoint of Point R and Point S. What was John's speed?