document.write( "Question 1091531: The Rhine river is 160 km shorter than the st lawerence. The amazon river is 800km longer than five times the length of the Rhine river. The Zambezi river is twice as long as the st Lawrence river. How long is the amazon if it is 1440km longer than the sum of the lengths of the other three rivers. \n" ); document.write( "
Algebra.Com's Answer #705939 by Boreal(15235)\"\" \"About 
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StL=x
\n" ); document.write( "Rhine=x-160
\n" ); document.write( "A=5(x-160)+800=5x
\n" ); document.write( "Z=2x
\n" ); document.write( "5x-1440=x+x-160+2x
\n" ); document.write( "5x-1440=4x-160
\n" ); document.write( "x=1280 km St. Lawrence
\n" ); document.write( "Rhine is 1120 km
\n" ); document.write( "Amazon 6400 km ANSWER
\n" ); document.write( "Zambezi is 2560 km.
\n" ); document.write( "Check lengths of 3 shorter rivers 4960 km
\n" ); document.write( "Amazon is 1440 km longer.
\n" ); document.write( "
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