document.write( "Question 1156092: On a recent trip, a trucker traveled 480 mi at a constant rate. Because of road conditions, the trucker then reduced the speed by 20 mph. An additional 40 mi was traveled at the reduced rate. The entire trip took 9 h. Find the rate of the trucker for the first 480 mi. \n" ); document.write( "
Algebra.Com's Answer #778780 by josgarithmetic(39623)\"\" \"About 
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document.write( "                    SPEED         TIME            DISTANCE\r\n" );
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document.write( "first part              r          480/r            480\r\n" );
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document.write( "second part           r-20          40/(r-20)        40\r\n" );
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document.write( "total                                9\r\n" );
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\n" ); document.write( "\"480%2Fr%2B40%2F%28r-20%29=9\" \n" ); document.write( "
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