document.write( "Question 1072396: A train covers its outward journey at 102 mph. It returns over same distance at 34 mph. What is the average speed of the train over the whole journey? \n" ); document.write( "
Algebra.Com's Answer #687310 by josgarithmetic(39623)\"\" \"About 
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\"system%28102%2Ax=d%2C34%2Ay=d%29\"\r
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\n" ); document.write( "\n" ); document.write( "Total time,\"x%2By=d%2F102%2Bd%2F34\"\r
\n" ); document.write( "\n" ); document.write( "Total distance, \"2d\"\r
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\n" ); document.write( "\n" ); document.write( "Average rate of the whole journey, \"%282d%29%2F%28d%2F102%2Bd%2F34%29\"\r
\n" ); document.write( "\n" ); document.write( "\"2%2F%281%2F102%2B1%2F34%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%2F%281%2F102%2B3%2F102%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%2F%284%2F102%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"1%2F%282%2F102%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%2851%29\"\r
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