document.write( "Question 786314: if perry goes for a 3 hour trip through town on country roads. If she averages 55mph on country roads and 35 mph through the towns, and if she travels 3 times as far on country roads as she does through towns, what is the total length of her trip? \n" ); document.write( "
Algebra.Com's Answer #477867 by mananth(16946)\"\" \"About 
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if perry goes for a 3 hour trip through town on country roads. If she averages 55mph on country roads and 35 mph through the towns, and if she travels 3 times as far on country roads as she does through towns, what is the total length of her trip?\r
\n" ); document.write( "\n" ); document.write( "let x be the distance driven in town--------rate 35mph
\n" ); document.write( "3x is the distance on country road-----------rate 55 mph\r
\n" ); document.write( "\n" ); document.write( "Time on country road + time on town roads = 3\r
\n" ); document.write( "\n" ); document.write( "t=d/r\r
\n" ); document.write( "\n" ); document.write( "x/35 + 3x/55 = 3\r
\n" ); document.write( "\n" ); document.write( "(55x+105x)/35*55=3\r
\n" ); document.write( "\n" ); document.write( "160x=35*55*3\r
\n" ); document.write( "\n" ); document.write( "/160
\n" ); document.write( "x=(35*55*3)/160\r
\n" ); document.write( "\n" ); document.write( "x= 36.09\r
\n" ); document.write( "\n" ); document.write( "3x=36*3=108.28 miles ( rounded off)\r
\n" ); document.write( "\n" ); document.write( "3x=3*36.09=108.28\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Total distance = 144.38 miles\r
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