document.write( "Question 58603: At 10Am, adam started out at 60 kilometers per hour to catch tom , who had a three hour head start. If adam was still 70 kilometers behind at 6 pm, how fast was tom driving? \n" ); document.write( "
Algebra.Com's Answer #40149 by Edwin McCravy(20059)\"\" \"About 
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At 10Am, adam started out at 60 kilometers per hour to catch tom , who had a\r\n" );
document.write( "three hour head start. If adam was still 70 kilometers behind at 6 pm, how fast\r\n" );
document.write( "was tom driving?\r\n" );
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document.write( "Make this chart\r\n" );
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document.write( "         DISTANCE  RATE  TIME\r\n" );
document.write( "Adam                                          \r\n" );
document.write( "Tom                            \r\n" );
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document.write( "Let Tom's rate be x.  Fill this in and \r\n" );
document.write( "also Adam's rate, which is 60.\r\n" );
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document.write( "         DISTANCE  RATE  TIME\r\n" );
document.write( "Adam                60                        \r\n" );
document.write( "Tom                  x      \r\n" );
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document.write( "At 6 pm, Adam had driven since 10AM, \r\n" );
document.write( "which is 8 hours.  Tom has a three hour \r\n" );
document.write( "head start, so at 6 PM Tom had driven \r\n" );
document.write( "for 11 hours. So fill in Adam's and \r\n" );
document.write( "Tom's times:\r\n" );
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document.write( "         DISTANCE  RATE  TIME\r\n" );
document.write( "Adam                60     8                  \r\n" );
document.write( "Tom                  x    11\r\n" );
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document.write( "Use DISTANCE = RATE × TIME to fill in \r\n" );
document.write( "the distances:\r\n" );
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document.write( "         DISTANCE  RATE  TIME\r\n" );
document.write( "Adam       480      60     8                  \r\n" );
document.write( "Tom        11x       x    11\r\n" );
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document.write( "Since Adam was 70 km behind Tom at \r\n" );
document.write( "6 PM, then\r\n" );
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document.write( "Adam's distance = Tom's distance minus 70\r\n" );
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document.write( "            480 = 11x - 70\r\n" );
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document.write( "Solve that and you'll get that Tom's rate \r\n" );
document.write( "is 50 km/h\r\n" );
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document.write( "Edwin
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