document.write( "Question 572148: if you drive 20 mile and it takes you 30miutes your average speed is?
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Algebra.Com's Answer #368321 by jim_thompson5910(35256)\"\" \"About 
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30 min = 1/2 hour\r
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\n" ); document.write( "\n" ); document.write( "d = rt\r
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\n" ); document.write( "\n" ); document.write( "20 = r(1/2)\r
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\n" ); document.write( "\n" ); document.write( "20*2 = r\r
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\n" ); document.write( "\n" ); document.write( "40 = r\r
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\n" ); document.write( "\n" ); document.write( "r = 40\r
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\n" ); document.write( "\n" ); document.write( "So the average speed is 40 mph
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