document.write( "Question 1041988: Can someone help with this word problem?\r
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\n" ); document.write( "\n" ); document.write( "Two planes, which are 2940 miles apart, fly toward each other. Their speeds differ by 35mph.
\n" ); document.write( "If they pass each other in 4 hours, what is the speed of each?
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Algebra.Com's Answer #656895 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
You can think of this as one of the planes
\n" ); document.write( "standing still and the other one covering
\n" ); document.write( "the 2940 miles at the sum of their speeds
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\n" ); document.write( "Let \"+s+\" = the speed of the slower plane in mi/hr
\n" ); document.write( "\"+s+%2B+35+\" = the speed of the faster plane in mi/hr
\n" ); document.write( "\"+t+=+4+\" = their flying time in hrs until they meet
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\n" ); document.write( "\"+2940+=+%28+s+%2B+s+%2B+35+%29%2A4+\"
\n" ); document.write( "\"+2940+=+%28+2s+%2B+35+%29%2A4+\"
\n" ); document.write( "\"+2940+=+8s+%2B+140+\"
\n" ); document.write( "\"+8s+=+2800+\"
\n" ); document.write( "\"+s+=+350+\"
\n" ); document.write( "and
\n" ); document.write( "\"+s+%2B+35+=+385+\"
\n" ); document.write( "Their speeds are 385 mi/hr and 350 mi/hr
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\n" ); document.write( "check:
\n" ); document.write( "\"+d%5B1%5D+=+350%2A4+\"
\n" ); document.write( "\"+d%5B1%5D+=+1400+\" mi
\n" ); document.write( "and
\n" ); document.write( "\"+d%5B2%5D+=+385%2A4+\"
\n" ); document.write( "\"+d%5B2%5D+=+1540+\" mi
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\n" ); document.write( "\"+d%5B1%5D+%2B+d%5B2%5D+=+1400+%2B+1540+\"
\n" ); document.write( "\"+d%5B1%5D+%2B+d%5B2%5D+=+2940+\" ( correct distance )
\n" ); document.write( "OK
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