document.write( "Question 164399: a bus is traveling at 50 mph then reduces its speed to 40 mph. the 220 mi. trip takes 5 hrs. how long does it travel at each speed? show equation. \n" ); document.write( "
Algebra.Com's Answer #121092 by midwood_trail(310) ![]() You can put this solution on YOUR website! A bus is traveling at 50 mph then reduces its speed to 40 mph. The 220 mile trip takes 5 hrs. How long does it travel at each speed? Show equation.\r \n" ); document.write( "\n" ); document.write( "Let D = distance\r \n" ); document.write( "\n" ); document.write( "Let r = rate = speed\r \n" ); document.write( "\n" ); document.write( "Let t = time (in hours)\r \n" ); document.write( "\n" ); document.write( "rt = D\r \n" ); document.write( "\n" ); document.write( "Bus going at 50mph\r \n" ); document.write( "\n" ); document.write( "50t = 220....This is the equation for the bus going at 50 mph.\r \n" ); document.write( "\n" ); document.write( "To find the time for this first case, divide both sides by 50.\r \n" ); document.write( "\n" ); document.write( "t = 220/50\r \n" ); document.write( "\n" ); document.write( "t = 4.4 hours\r \n" ); document.write( "\n" ); document.write( "If the travels at 50 mph, it will take the bus 4.4 hours to reach 220 miles.\r \n" ); document.write( "\n" ); document.write( "===============================================================\r \n" ); document.write( "\n" ); document.write( "For bus going at 40mph:\r \n" ); document.write( "\n" ); document.write( "rt = D\r \n" ); document.write( "\n" ); document.write( "40t = 220....This is the equation for the bus going at 40 mph.\r \n" ); document.write( "\n" ); document.write( "Divide both sides by 40 to find the time it takes the bus to reach 220 miles at 40 miles per hour.\r \n" ); document.write( "\n" ); document.write( "t = 220/40\r \n" ); document.write( "\n" ); document.write( "t = 5.5 hours\r \n" ); document.write( "\n" ); document.write( "Is this clear?\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |