document.write( "Question 168635: A train travels 600 miles in the same time that a truck travels 520 miles. The train's average speed is 8 miles per hour faster than the truck's average speed. What is the speed of the train? \n" ); document.write( "
Algebra.Com's Answer #124290 by stanbon(75887)\"\" \"About 
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A train travels 600 miles in the same time that a truck travels 520 miles.
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\n" ); document.write( "The train's average speed is 8 miles per hour faster than the truck's average speed.
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\n" ); document.write( "What is the speed of the train?
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\n" ); document.write( "Train DATA:
\n" ); document.write( "distance = 600 miles ; rate = x+8 mph ; time = d/r = 600/(x+8) hrs.
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\n" ); document.write( "Truck DATA:
\n" ); document.write( "distance = 520 miles ; rate = x mph ; time = d/r = 520/x hrs.
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\n" ); document.write( "EQUATION:
\n" ); document.write( "time = time
\n" ); document.write( "600/(x+8) = 520/x
\n" ); document.write( "600x = 520(x+8)
\n" ); document.write( "15x = 13(x+8)
\n" ); document.write( "15x = 13x + 104
\n" ); document.write( "2x = 104
\n" ); document.write( "x = 52 mph (speed of the truck)
\n" ); document.write( "x+8 = 60 mph (speed of the train)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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