document.write( "Question 1094907: Darren drives to school in rush hour traffic and averages 21 mph. He returns home in mid-afternoon when there is less traffic and averages 42 mph. What is the distance between his home and school if the total traveling time is 1hr30min?
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Algebra.Com's Answer #709494 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "Darren drives to school in rush hour traffic and averages 21 mph. He returns home in mid-afternoon when there is less traffic and averages 42 mph. What is the distance between his home and school if the total traveling time is 1hr30min?
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Let distance be D
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document.write( "Then time taken to get to school = \"D%2F21\"
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document.write( "Time taken to get home = \"D%2F42\"
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document.write( "We then get the following TIME equation: \"matrix%281%2C3%2C+D%2F21+%2B+D%2F42%2C+%22=%22%2C+3%2F2%29\"
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document.write( "2D + D = 63 ----- Multiplying by LCD, 42
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document.write( "3D = 63
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document.write( "D, or distance = \"highlight_green%28matrix%281%2C4%2C+63%2F3%2C+%22=%22%2C+21%2C+miles%29%29\"
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document.write( "How easy was that? \n" );
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