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 #197736 by drk(1908)\"\" \"About 
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here is the original; problem
\n" ); document.write( "\"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( "This is an RTD problem. Here is a table based on the given information.
\n" ); document.write( "bus . . . . . . . . .rate . . . . . . . . .time . . . . . . . . . distance
\n" ); document.write( ". . . . . . . . . . . . 50 . . . . . . . . . . t . . . . . . . . .50t
\n" ); document.write( ". . . . . . . . . . . . 40. . . . . . . . . 5 - t . . . . . . . . 200 - 40t
\n" ); document.write( ". . . . . . . . . . . . . . . . . . . . . . . .5. . . . . . . . . 220
\n" ); document.write( "from column 3 we get
\n" ); document.write( "50t + 200 - 40t = 220
\n" ); document.write( "combine like terms and we get
\n" ); document.write( "10t + 200 = 220
\n" ); document.write( "subtract to get
\n" ); document.write( "10t = 20
\n" ); document.write( "t = 2
\n" ); document.write( "5 - t = 3
\n" ); document.write( "50 mph for 2 hours
\n" ); document.write( "40 mph for 3 hours \n" ); document.write( "
\n" );