document.write( "Question 267080: A bus traveled on a level road for 3 hrs at an average speed of 20 mph faster than it traveled on a winding road. The time spent on the winding road was 4 hrs, find the average speed on the level road if the entire trip was 305 miles. \n" ); document.write( "
Algebra.Com's Answer #196141 by ankor@dixie-net.com(22740)\"\" \"About 
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A bus traveled on a level road for 3 hrs at an average speed of 20 mph faster than it traveled on a winding road.
\n" ); document.write( " The time spent on the winding road was 4 hrs, find the average speed on the level road if the entire trip was 305 miles.
\n" ); document.write( ":
\n" ); document.write( "Let s = average speed on the level road
\n" ); document.write( "then
\n" ); document.write( "(s-20) = average speed on the winding road
\n" ); document.write( ":
\n" ); document.write( "Write a distance equation: Dist = time * speed
\n" ); document.write( ":
\n" ); document.write( "Lev rd dist + wind rd dist = 305 mi
\n" ); document.write( "3s + 4(s-20) = 305
\n" ); document.write( ":
\n" ); document.write( "3s + 4s - 80 = 305
\n" ); document.write( "7s = 305 + 80
\n" ); document.write( "7s = 385
\n" ); document.write( "s = \"385%2F7\"
\n" ); document.write( "s = 55 mph, av speed on the level road
\n" ); document.write( ":
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\n" ); document.write( "Check solution by finding the dist traveled at each speed
\n" ); document.write( "4(55) = 220
\n" ); document.write( "3(35) = 105
\n" ); document.write( "-------------
\n" ); document.write( "total = 305; confirms our solution \n" ); document.write( "
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