document.write( "Question 1194491: Please help me solve this :
\n" ); document.write( "There are two trains. The rabbit heads north on the expressway at 45kph.
\n" ); document.write( "Exactly 12 minutes after, Panther follows at a steady speed of 54kph. How
\n" ); document.write( "long does it take Panther to overtake the Rabbit?
\n" ); document.write( "Please Include Represent, Relate, Equate, Solve and Prove. Thank you!
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Algebra.Com's Answer #826709 by ankor@dixie-net.com(22740)\"\" \"About 
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There are two trains.
\n" ); document.write( " The rabbit heads north on the expressway at 45kph.
\n" ); document.write( " Exactly 12 minutes after, Panther follows at a steady speed of 54kph.
\n" ); document.write( " How long does it take Panther to overtake the Rabbit?
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\n" ); document.write( "Notice that when one train catches the other, they will travel the same distance
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\n" ); document.write( "Change 12 min to hrs. 12/60 = .2 hrs. We need to do this because the speed is
\n" ); document.write( "in km per hour
\n" ); document.write( "let t = travel time (in hrs) of P
\n" ); document.write( "then R leaves 12 min earlier, therefore
\n" ); document.write( "(t+.4) = travel time of R
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\n" ); document.write( "P's dist = R's dist
\n" ); document.write( "54t = 45(t+.4)
\n" ); document.write( "54t = 45t + 18
\n" ); document.write( "54 - 45t = 18
\n" ); document.write( "9t = 18
\n" ); document.write( "t = 18/9
\n" ); document.write( "t = 2 hrs for P to catch R
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\n" ); document.write( "Check, find the actual dist for each, should be equal
\n" ); document.write( "2 * 54 = 108 km
\n" ); document.write( "2.4 * 45 = 108
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