J.R. S. answered 12/13/18
Tutor
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Ph.D. in Biochemistry--University Professor--Chemistry Tutor
10 km/30 min x 60 min/hour = 20 km/hour
Shanireia Z.
asked 12/13/18A girl takes 30 minutes to travel around a cross-country ski course: a distance of 10 km. Calculate her average speed in km/h.
J.R. S. answered 12/13/18
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
10 km/30 min x 60 min/hour = 20 km/hour
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