document.write( "Question 579215: A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves the same rest stop 1/4 h later following the truck at a steady pace of 64mi/h. How long after the truck leaves the rest stop will the car overtake the truck?\r
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document.write( "I am wondering how you make an equation for a problem like that and then how you would solve it. \n" );
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Algebra.Com's Answer #371047 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. \n" ); document.write( " A car leaves the same rest stop 1/4 h later following the truck at a steady pace of 64mi/hr \n" ); document.write( " How long after the truck leaves the rest stop will the car overtake the truck? \n" ); document.write( ": \n" ); document.write( "Let t = travel time of the truck \n" ); document.write( "then \n" ); document.write( "(t-.25) = travel time of the car \n" ); document.write( ": \n" ); document.write( "When the car overtakes the truck they will have traveled the same distance \n" ); document.write( "Write a distance equation: Dist = speed * time \n" ); document.write( ": \n" ); document.write( "car dist = truck dist \n" ); document.write( "64(t-.25) = 56t \n" ); document.write( "64t - 16 = 56t \n" ); document.write( "64t - 56t = 16 \n" ); document.write( "8t = 16 \n" ); document.write( "t = 16/8 \n" ); document.write( "t = 2 hrs after the truck leaves, the car overtakes him \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check this by finding the actual distance each traveled; they should be the same. \n" ); document.write( "Car: 64(1.75) = 112 mi \n" ); document.write( "Truck: 56(2) = 112 mi \n" ); document.write( " |