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the thickness of continental crust
60 km in 35 hours x km in 1 hour x = 60 km/35 hr ≈ 1.7 km/hr
1 km = 1000 metres so 35 km = 35000 m
A passenger train takes 2 hours less than a freight train takes to travel from Norman to Enid. The passenger train averages 96 km/hr, while the freight train averages 64 km/hr. What is the distance from Norman to Enid?
40 km = 4,000,000 cm