document.write( "Question 249530: the speed of train A is 12 mph slower than the speed of train B. Train A travles 220 miles in the same time it takes train B to travel 280 miles. Find the speed of each train. \n" ); document.write( "
Algebra.Com's Answer #181727 by stanbon(75887)\"\" \"About 
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the speed of train A is 12 mph slower than the speed of train B. Train A travles 220 miles in the same time it takes train B to travel 280 miles. Find the speed of each train.
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\n" ); document.write( "Train A DATA:
\n" ); document.write( "distance = 220 miles ; rate = x-12 mph ; time = d/r = 220/(x-12) hrs
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\n" ); document.write( "Train B DATA:
\n" ); document.write( "distance = 280 miles ; rate = x mph ; time d/r = 280/x hrs
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\n" ); document.write( "Equation:
\n" ); document.write( "time A = time B
\n" ); document.write( "220/x-12 = 280/x
\n" ); document.write( "220x = 280(x-12)
\n" ); document.write( "220x = 280x - 3360
\n" ); document.write( "-60x = -3360
\n" ); document.write( "x = 56 mph (train B rate)
\n" ); document.write( "---
\n" ); document.write( "x-12 = 44 mph (train A rate)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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