document.write( "Question 1203278: The total length of the coastlines of Canada, the United States, and Mexico is about 270 000 km. The Canadian coastline is 16 times the average length of the coastlines of the U.S. and Mexico. The U.S. coastline is 10 000 km longer than the Mexican coastline. Find the length of the coastline of each country, in kilometres. \n" ); document.write( "
Algebra.Com's Answer #838717 by josgarithmetic(39618)\"\" \"About 
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document.write( "REGION                  COASTLINE LENGTH, km\r\n" );
document.write( "Canada                  16(1/2)(m+m+10000)\r\n" );
document.write( "Mex.                     m\r\n" );
document.write( "US                       m+10000\r\n" );
document.write( "TOTAL                    270000\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solve this and evaluate the other two lengths: \"8%282m%2B10000%29%2Bm%2B%28m%2B10000%29=270000\"\r
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\n" ); document.write( "\n" ); document.write( "\"16m%2B8%2A10000%2B2m%2B10000=270000\"\r
\n" ); document.write( "\n" ); document.write( "\"18m=270000-80000-10000\"\r
\n" ); document.write( "\n" ); document.write( "\"18m=270000-90000\"\r
\n" ); document.write( "\n" ); document.write( "\"18m=180000\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28m=10000%29\"\r
\n" ); document.write( "\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( ".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "recheck
\n" ); document.write( "can. 8(2*10000+10000)=8(30000)=240000
\n" ); document.write( "mex. 10000
\n" ); document.write( "us 20000
\n" ); document.write( "sum: 270000
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