SOLUTION: An olympic marathoner passes the 8 km point of a race after 24 minutes and reaches the 30 km point after 2.2 hours. Find the average speed of the marathoner in km/hour.

Question 943294: An olympic marathoner passes the 8 km point of a race after 24 minutes and reaches the 30 km point after 2.2 hours. Find the average speed of the marathoner in km/hour.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
d = 30 - 8
d = 22 km
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t = 2.2 - 24/60
t = 1.8 hr
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s = d/t
s = 22/1.8
s = 12.2222222 kph
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