document.write( "Question 1047729: a plane averaging 120mi/h and an express train averaging 60 mi/h depart at the same time from the same city headed for the same destination. if the train arrives 45 min later than the plane, how far did they both travel? \n" ); document.write( "

Algebra.Com's Answer #663257 by josgarithmetic(39618) $\"\"$ $\"About$

You can put this solution on YOUR website!
They both went the same distance, d.\r
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document.write( "                  SPEED     TIME     DISTANCE\r\n" );
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document.write( "PLANE             120         t        d\r\n" );
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document.write( "TRAIN             60         t+3/4     d\r\n" );
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\r
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\n" ); document.write( "\n" ); document.write( "System of Equations: $\"system%28120t=d%2C60%28t%2B3%2F4%29=d%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"t=d%2F120\"$
\n" ); document.write( "-
\n" ); document.write( " $\"60t%2B60%283%2F4%29=d\"$
\n" ); document.write( " $\"d=60t%2B45\"$
\n" ); document.write( " $\"d=60d%2F120%2B45\"$
\n" ); document.write( " $\"d=d%2F2%2B45\"$
\n" ); document.write( " $\"2d=d%2B90\"$
\n" ); document.write( " $\"highlight%28d=90%29\"$ \n" ); document.write( "

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