document.write( "Question 269240: It takes one hour longer to fly to St. Paul at 200 mi/h than it does to return at 250 mi/h. How far away is St. Paul? I think it involves the use of the distance formula d=rt but I'm not sure how to use it because this problem only gives me \"one hour longer\" as a time. \n" ); document.write( "
Algebra.Com's Answer #197321 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! It takes one hour longer to fly to St. Paul at 200 mi/h than it does to return at 250 mi/h. \n" ); document.write( "--------------------- \n" ); document.write( "Slow leg: \n" ); document.write( "rate = 200 mph ; time = x hrs. : distance = rt = 200x miles \n" ); document.write( "----------------------- \n" ); document.write( "Fast leg: \n" ); document.write( "rate = 250 mph ; time = x-1 hrs ; distance = rt = 250(x-1) miles \n" ); document.write( "--------------------------- \n" ); document.write( "Equation: \n" ); document.write( "distance = distance \n" ); document.write( "200x = 250(x-1) \n" ); document.write( "200x = 250x - 250 \n" ); document.write( "-50x = -250 \n" ); document.write( "x = 5 hrs. \n" ); document.write( "--- \n" ); document.write( "Distance = 200x = 200*5 = 1000 miles \n" ); document.write( "======================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "How far away is St. Paul? I think it involves the use of the distance formula d=rt but I'm not sure how to use it because this problem only gives me \"one hour longer\" as a time. \n" ); document.write( " \n" ); document.write( " |