document.write( "Question 716008: Returning home form a backpacking weekend, akiko and larry drove at first for 4 hours on a winding mountain road. Once they hit they free way, they were able to increase their speed by 35 miles per hour, and they drove for 7 hours until they got home. If the entire trip was 597, miles how fast did they drive on the freeway? \n" ); document.write( "
Algebra.Com's Answer #439717 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
r = rate driven on the freeway
\n" ); document.write( "r-35 = rate on winding road\r
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\n" ); document.write( "\n" ); document.write( "The distance parts:
\n" ); document.write( "Winding Road, \"%28r-35%29%2A4\"
\n" ); document.write( "Freeway, \"r%2A7\"
\n" ); document.write( "Whole Trip Home, \"highlight%28%28r-35%29%2A4%2Br%2A7=597%29\", Find r.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Some arithmetic steps:
\n" ); document.write( "\"4r-4%2A35%2B7r=597\"
\n" ); document.write( "\"11r=597%2B4%2A35\"
\n" ); document.write( "\"11r=737\"
\n" ); document.write( "ANSWER RESULT, \"r=67\" miles per hour on the freeway.
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