document.write( "Question 875028: A student walks and jogs to
\n" ); document.write( "college each day. She averages 5km/h walking and 9 km/h
\n" ); document.write( "jogging. The distance from home to college is
\n" ); document.write( "8 km, and she makes the trip in 1 hr. How far does the student jog? \n" ); document.write( "
Algebra.Com's Answer #527954 by mananth(16946)\"\" \"About 
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A student walks and jogs to
\n" ); document.write( "college each day. \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "and 9 km/h jogging.
\n" ); document.write( "let this distance be x
\n" ); document.write( "time = x/9\r
\n" ); document.write( "\n" ); document.write( "She averages 5km/h walking
\n" ); document.write( "this distance will be 8-x
\n" ); document.write( "(8-x)/5\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " she makes the trip in 1 hr.
\n" ); document.write( "x/9 + (8-x)/5 =1\r
\n" ); document.write( "\n" ); document.write( "multiply by 45\r
\n" ); document.write( "\n" ); document.write( "5x+72-9x=45
\n" ); document.write( "4x=27
\n" ); document.write( "x=27/4
\n" ); document.write( "x=6.75 km\r
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