document.write( "Question 410561: two trains are 330 miles apart. one train is traveling 20 mph faster than the other. find the speed of each train if they are traveling toward each other and will meet in 3 hours. \n" ); document.write( "
Algebra.Com's Answer #288671 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

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document.write( "Hi
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document.write( "Let x and (x+20mph)represent their respective speeds.  t = D/r
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document.write( "Question states***
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document.write( "  330/x + 330/(x+20) = 3hr
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document.write( "Solving for x
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document.write( " 330(x+20) + 330x = 3x(x+20)
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document.write( "  660x + 6600 = 3x^2 + 60x
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document.write( "   3x^2 -600x - 6600 = 0
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document.write( "  3(x^2 - 200x - 2200) = 0
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document.write( "\"x+=+%28200+%2B-+sqrt%28+48800+%29%29%2F%282%29+\"
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document.write( "  x = 210.4536   |negative solution tossed out for speed
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document.write( "CHECKING our Answer***
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document.write( "  330/210 + 330/230 = 3hr  |to the nearest whole number \n" );
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