document.write( "Question 958678: How do I solve this? \r
\n" ); document.write( "\n" ); document.write( "\"Philip drove 12 miles in town in the same time he drove 19 miles on the highway. His highway speed was 21 miles per hour faster than his speed in town. What was his average speed on the highway?\"
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Algebra.Com's Answer #585892 by josgarithmetic(39799)\"\" \"About 
You can put this solution on YOUR website!
RT=D uniform rates rule for travel.\r
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\n" ); document.write( "\n" ); document.write( "___________________speed___________time__________distance
\n" ); document.write( "IN TOWN_____________r________________t____________12
\n" ); document.write( "HIGHWAY_____________r+21_____________t____________19\r
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\n" ); document.write( "\n" ); document.write( "Variable assignments implied in the table.
\n" ); document.write( "\"system%28rt=12%2C%28r%2B21%29t=19%29\"\r
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\n" ); document.write( "\n" ); document.write( "You want to solve for r and evaluate r+21.
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