document.write( "Question 1192788: Train A is 200 miles west of train B. Train A starts travelling north at a constant speed of 85 mph. Two hours later, train B starts travelling east, at 90 mph. How many miles apart are the two trains after five hours? \n" ); document.write( "

Algebra.Com's Answer #824745 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Train A is 200 miles west of train B. Train A starts travelling north at a constant speed of 85 mph. Two hours later, train B starts travelling east, at 90 mph. How many miles apart are the two trains after five hours?
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If it's 5 hours after B started, then A would've been traveling for 7 (2 + 5) hours
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document.write( "In 5 hours, B would've traveled 5(90) = 450 miles, and would've been 200 + 450, or 650 miles from A's starting point
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document.write( "In 7 hours, A would've traveled 7(85) = 595 miles, north of its starting point
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document.write( "We now have a right-angled triangle, with legs of 595 and 650 miles. 
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document.write( "Distance both trains are apart, 7 hours after A started, and 5 nours after B started: 
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document.write( "Obviously if it's 5 hours after A started, calculations will be different. \n" );
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