document.write( "Question 1201192: Matt took 7hrs to drive from Kingston to Montreal a total distance of 485 km. He drove most of the way at 100 km/h, but was slowed to 30 km/h during a trafic jam. How many hours he spend driving at each speed?
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Algebra.Com's Answer #835456 by ikleyn(52864) $\"\"$ $\"About$

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\n" ); document.write( "Matt took 7hrs to drive from Kingston to Montreal a total distance of 485 km.
\n" ); document.write( "He drove most of the way at 100 km/h, but was slowed to 30 km/h during a trafic jam.
\n" ); document.write( "How many hours he spend driving at each speed?
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document.write( "    t hours at the speed of 100 km/h, and \r\n" );
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document.write( "(7-t) hours at the speed of 30 km/h.\r\n" );
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document.write( "Write the total distance equation\r\n" );
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document.write( "    100t + 30*(7-t) = 485  kilometers.\r\n" );
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document.write( "From this equation, find t.\r\n" );
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