document.write( "Question 464969: two planes which are 2475 miles apart fly towards each other. Their speeds differ by 75 mph. If they pass each other in 3 hours what is the speed of both? \n" ); document.write( "

Algebra.Com's Answer #318624 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
You can think of this as one plane being stationary
\n" ); document.write( "and the other one flying towards it at the sum of their speeds
\n" ); document.write( "If one plane's speed is $\"s\"$ , the other is $\"+s+%2B+75+\"$
\n" ); document.write( "The plane that is moving has to fly $\"+2475+\"$ mi
\n" ); document.write( " $\"+2475+=+%28s+%2B+s+%2B+75%29%2A3+\"$
\n" ); document.write( " $\"+2475+=+6s+%2B+225+\"$
\n" ); document.write( " $\"+6s+=+2250+\"$
\n" ); document.write( " $\"+s+=+375+\"$
\n" ); document.write( " $\"+s+%2B+75+=+450+\"$
\n" ); document.write( "The speeds of the planes are 375 mi/hr and 450 mi/hr
\n" ); document.write( "To check answers:
\n" ); document.write( "How far does slower plane go in 3 hrs?
\n" ); document.write( " $\"+d%5B1%5D+=+375%2A3+\"$
\n" ); document.write( "How far does faster plane go in 3 hrs?
\n" ); document.write( " $\"+d%5B2%5D+=+450%2A3+\"$
\n" ); document.write( "Does $\"+d%5B1%5D+%2B+d%5B2%5D+=+2475+\"$ ?
\n" ); document.write( "You can check \n" ); document.write( "

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