document.write( "Question 11425: Two planes left St. Louis for Los Angeles at the same time. After 4 hours they were 700 miles apart. The slower plane traveled at 350 miles/hour. What was the speed of the faster plane?\r
\n" ); document.write( "\n" ); document.write( "At first, I used the formula:\r
\n" ); document.write( "\n" ); document.write( "350(4)+4x=700\r
\n" ); document.write( "\n" ); document.write( "I kept getting a negative answer and the answer is supposedly 525 miles/hour. Any help would be appreciated! I've been working on this problem for a good 45 minutes already so please help!
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Algebra.Com's Answer #5927 by askmemath(368)\"\" \"About 
You can put this solution on YOUR website!
The slower plane travelled at 350mph for 4 hours.Which means that in 4 hours it covered 350x4 = 1400m\r
\n" ); document.write( "\n" ); document.write( "But the distance between the faster and slower plane is 700 miles.Which means the faster plane travelled a distance of 1400+700 = 2100miles\r
\n" ); document.write( "\n" ); document.write( "Total time the faster plane took to travel this distance is also 4 hours\r
\n" ); document.write( "\n" ); document.write( "So Speed = 2100/4 = 525miles/hour.
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