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! \n" );
document.write( "
Algebra.Com's Answer #826709 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 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? \n" ); document.write( ": \n" ); document.write( "Notice that when one train catches the other, they will travel the same distance \n" ); document.write( ": \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 \n" ); document.write( ": \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 \n" ); document.write( "\" \n" ); document.write( "\" \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 \n" ); document.write( " \n" ); document.write( " |