document.write( "Question 1118110: Brendan and Andrew both leave the library at the same time, but in opposite directions. If Andrew travels 7 mph faster than Brendan and after 9 hours they are 207 miles apart, how fast is each traveling?
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Algebra.Com's Answer #733352 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "The sum of their speeds is the rate at which the distance between them is increasing; that rate is 207/9 = 23 mph. Then \n" ); document.write( "let x = Brendan's speed \n" ); document.write( "then x+7 = Andrew's speed \n" ); document.write( "x + (x+7) = 23 \n" ); document.write( "Solve formally with basic algebra if required; or solve informally using logical reasoning. \n" ); document.write( " |