document.write( "Question 410351: two planes which are 2745 miles apart fly toward each other. Their speeds differ by 65 mph. If they pass each other in 3 hours, what is the speed of each? \n" ); document.write( "

Algebra.Com's Answer #288620 by josmiceli(19441) $\"\"$ $\"About$

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They approach at the sum of their speeds
\n" ); document.write( "Think of one plane not moving and the other
\n" ); document.write( "moving at $\"s+%2B+s+%2B+65\"$
\n" ); document.write( " $\"2745+=+%282s+%2B+65%29%2A3\"$
\n" ); document.write( " $\"2745+=+6s+%2B+195\"$
\n" ); document.write( " $\"6s+=+2550\"$
\n" ); document.write( " $\"s+=+425\"$
\n" ); document.write( "and
\n" ); document.write( " $\"s+%2B+65+=+490\"$
\n" ); document.write( "Their speeds are 425 and 490 mi/hr
\n" ); document.write( "check:
\n" ); document.write( " $\"d%5B1%5D+=+425%2A3\"$
\n" ); document.write( " $\"d%5B1%5D+=+1275\"$
\n" ); document.write( "and
\n" ); document.write( " $\"d%5B2%5D+=+490%2A3\"$
\n" ); document.write( " $\"d%5B2%5D+=+1470\"$
\n" ); document.write( " $\"d%5B1%5D+%2B+d%5B2%5D+=+2745\"$
\n" ); document.write( "OK \n" ); document.write( "

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