document.write( "Question 700776: Dustin drives 5 mph faster than Kelly. If he leaves town one hour after Kelly and they travel in opposite directions, they will have driven equal distances after Dustin has traveled seven hours. How far apart are they? \n" ); document.write( "
Algebra.Com's Answer #432013 by ankor@dixie-net.com(22740)\"\" \"About 
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Dustin drives 5 mph faster than Kelly.
\n" ); document.write( " If he leaves town one hour after Kelly and they travel in opposite directions, they will have driven equal distances after Dustin has traveled seven hours.
\n" ); document.write( " How far apart are they?
\n" ); document.write( ":
\n" ); document.write( "Let s = K's speed
\n" ); document.write( "then
\n" ); document.write( "(s+5) = D's speed
\n" ); document.write( ":
\n" ); document.write( "K travels 8 hrs
\n" ); document.write( ":
\n" ); document.write( "Write a distance equation; dist = speed * time
\n" ); document.write( "8s = 7(s+5)
\n" ); document.write( "8s = 7s + 35
\n" ); document.write( "8s - 7s = 35
\n" ); document.write( "s = 35 mph is K's speed
\n" ); document.write( ":
\n" ); document.write( "Find the distance he traveled in 8 hrs
\n" ); document.write( "8 * 35 = 280 mi
\n" ); document.write( "Find D's distance, they should be the same
\n" ); document.write( "7 * 40 = 280 mi
\n" ); document.write( ":
\n" ); document.write( "They would be 2(280) 560 mi apart \n" ); document.write( "
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