document.write( "Question 662370: At first an athlete jogs at 4 miles per hour and then jogs at 8 miles per hour, traveling 6 miles in 1 hour. How long does the athlete jog at each speed? \n" ); document.write( "
Algebra.Com's Answer #412249 by ankor@dixie-net.com(22740)\"\" \"About 
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At first an athlete jogs at 4 miles per hour and then jogs at 8 miles per hour, traveling 6 miles in 1 hour.
\n" ); document.write( " How long does the athlete jog at each speed?
\n" ); document.write( ":
\n" ); document.write( "let t = time jogging at 8 mph
\n" ); document.write( "then
\n" ); document.write( "(1-t) = time jogging at 4 mph
\n" ); document.write( ":
\n" ); document.write( "Write a distance equation: dist = speed * time
\n" ); document.write( "8mph dist + 4mph dist = 6 mi
\n" ); document.write( "8t + 4(1-t) = 6
\n" ); document.write( "8t + 4 - 4t = 6
\n" ); document.write( "8t - 4t = 6 - 4
\n" ); document.write( "4t = 2
\n" ); document.write( "t = 2/4
\n" ); document.write( "t = 1/2 hr at 8 mph, then obviously, 1/2 hr at 4 mph also \n" ); document.write( "
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