document.write( "Question 239303: Nancy jogs & walks to school each day. She averages 4km/h walking and 8km/h jogging the distance from home to school is 6km and she makes the trip in 1 hr. How far does she jog in a trip? \n" ); document.write( "
Algebra.Com's Answer #175706 by stanbon(75887)\"\" \"About 
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Nancy jogs & walks to school each day. She averages 4km/h walking and 8km/h jogging the distance from home to school is 6km and she makes the trip in 1 hr. How far does she jog in a trip?
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\n" ); document.write( "Jogging DATA:
\n" ); document.write( "rate = 8 km/h ; distance = x km ; time = d/r = x/8 hrs.
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\n" ); document.write( "Walking DATA:
\n" ); document.write( "rate = 4 km/h ; distance 6-x km ; time = d/r = (6-x)/4 hrs.
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\n" ); document.write( "Equation:
\n" ); document.write( "time + time = 1 hr.
\n" ); document.write( "x/8 + (6-x)/4 = 1 hr
\n" ); document.write( "Multiply thru by 8 to get:
\n" ); document.write( "x + 12-2x = 8
\n" ); document.write( "-x = -4
\n" ); document.write( "x = 4 km (distance she jogs in a trip)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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