document.write( "Question 921606: Lamar drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took
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document.write( "8
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document.write( " hours. When Lamar drove home, there was no traffic and the trip only took
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document.write( "5
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document.write( " hours. If his average rate was
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document.write( "21
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document.write( " miles per hour faster on the trip home, how far away does Lamar live from the mountains? \n" );
document.write( "
Algebra.Com's Answer #559098 by stanbon(75887) ![]() You can put this solution on YOUR website! Lamar drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 8 hours. \n" ); document.write( "When Lamar drove home, there was no traffic and the trip only took 5 hours. \n" ); document.write( "If his average rate was 21 miles per hour faster on the trip home, how far away does Lamar live from the mountains? \n" ); document.write( "---------------------- \n" ); document.write( "From Home:: \n" ); document.write( "time = 8 hrs ; rate = x mph ; distance = 8x miles \n" ); document.write( "------- \n" ); document.write( "To Home:: \n" ); document.write( "time = 5 hrs ; rate = x+21 mph ; distance = 5(x+21) = 5x + 105 miles \n" ); document.write( "-------- \n" ); document.write( "Equation: \n" ); document.write( "8x = 5x + 105 \n" ); document.write( "3x = 105 \n" ); document.write( "x = 35 mph \n" ); document.write( "----- \n" ); document.write( "Ans: distance to mountains = 8x = 8*35 = 280 miles \n" ); document.write( "------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------------- \n" ); document.write( " |