document.write( "Question 233275: In a walk a thin to raise money for charity Elisa walked a certain distance at 5mph and then jogged twice that distance at 8 mph. her total time walking and jogging was 2 hours and 15 minutes. how far did she get? \n" ); document.write( "
Algebra.Com's Answer #172186 by stanbon(75887)\"\" \"About 
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Elisa walked a certain distance at 5mph and then jogged twice that distance at 8 mph.
\n" ); document.write( "Her total time walking and jogging was 2 hours and 15 minutes.
\n" ); document.write( "How far did she get?
\n" ); document.write( "---
\n" ); document.write( "Walking DATA:
\n" ); document.write( "rate = 5 mph ; distance = x miles ; time = d/r = x/5 hrs.
\n" ); document.write( "------------------------------------------
\n" ); document.write( "Jogging DATA:
\n" ); document.write( "rate = 8 mph ; distance = 2x miles ; time = (2x)/8 hrs.
\n" ); document.write( "-------------------------------------------
\n" ); document.write( "Equations:
\n" ); document.write( "time + time = 2.25 hrs
\n" ); document.write( "x/5 + (2x)/8 = 9/4 hrs
\n" ); document.write( "Multiply thru by 20 to get:
\n" ); document.write( "4x + 5x = 5*9
\n" ); document.write( "x = 5 miles
\n" ); document.write( "---
\n" ); document.write( "Total distance: x + 2x = 5+10 = 15 miles
\n" ); document.write( "===========================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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