document.write( "Question 314004: Two cars leave philadelphia, one traveling north and the other traveling south. After 3 hours, they are 297 miles apart. If one car is traveling 5 miles per hour faster than the other, what is the speed of each? \n" ); document.write( "
Algebra.Com's Answer #224471 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Two cars leave philadelphia, one traveling north and the other traveling south. After 3 hours, they are 297 miles apart. If one car is traveling 5 miles per hour faster than the other, what is the speed of each? \n" ); document.write( "----------------------------------- \n" ); document.write( "Slower car DATA: \n" ); document.write( "rate = x mph ; time = 3 hrs ; distance = 3x miles \n" ); document.write( "----------------- \n" ); document.write( "Faster car DATA: \n" ); document.write( "rate = x+5 mph ; time = 3 hrs ; distance = 3x+15 miles \n" ); document.write( "--------------------- \n" ); document.write( "Equation: \n" ); document.write( "3x + 3x+15 = 297 \n" ); document.write( "6x + 15 = 297 \n" ); document.write( "2x + 5 = 99 \n" ); document.write( "2x = 94 \n" ); document.write( "x = 47 mph (slower car rate) \n" ); document.write( "x+5 = 52 (faster car rate) \n" ); document.write( "============================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========================== \n" ); document.write( " |