document.write( "Question 1173838: An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of the plane was three times the rate of the car. The total trip took 7 h. Find the rate of the car. \n" ); document.write( "
Algebra.Com's Answer #799142 by josgarithmetic(39800)\"\" \"About 
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document.write( "            SPEED        TIME              DISTANCE\r\n" );
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document.write( "CAR           c          170/c               170\r\n" );
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document.write( "PLANE        3c          645/(3c)            645\r\n" );
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document.write( "TOTAL                      7\r\n" );
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