document.write( "Question 482696: On Jerry's way to work in the morning, he was only able to travel at a rate of 20 mph because of traffic. On his drive home, he averaged 40mph. If his total time was 1 1/2 hours, how long did it take him to drive to work? \n" ); document.write( "
Algebra.Com's Answer #330384 by cleomenius(959)\"\" \"About 
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I would set this up in the following manner with two equations:
\n" ); document.write( "rate*time = rate*rime\r
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\n" ); document.write( "\n" ); document.write( "20x = 40y
\n" ); document.write( "x + y = 1.5;
\n" ); document.write( "y = 1.5 - x\r
\n" ); document.write( "\n" ); document.write( "Then substitute equation two into equation one.
\n" ); document.write( "20x = 40(1.5- x)
\n" ); document.write( "20x = 60 - 40x
\n" ); document.write( "60x = 60
\n" ); document.write( "x = 1
\n" ); document.write( "y therefore comes out to .5
\n" ); document.write( "Cleomenius.\r
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