document.write( "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. \n" ); document.write( "

Algebra.Com's Answer #575077 by TimothyLamb(4379) $\"\"$ $\"About$

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d = 30 - 8
\n" ); document.write( "d = 22 km
\n" ); document.write( "---
\n" ); document.write( "t = 2.2 - 24/60
\n" ); document.write( "t = 1.8 hr
\n" ); document.write( "---
\n" ); document.write( "s = d/t
\n" ); document.write( "s = 22/1.8
\n" ); document.write( "s = 12.2222222 kph
\n" ); document.write( "---
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