document.write( "Question 999227: A train leaves Columbia heading due west at 80 mph at 8 am. A helicopter leaves at 9:30 am going due west at 120 mph. At what time will the helicopter overtake the train? \n" ); document.write( "
Algebra.Com's Answer #616905 by mananth(16946)![]() ![]() You can put this solution on YOUR website! distance travelled by both are same when they meet\r \n" ); document.write( "\n" ); document.write( "speed car = 80 time = t \n" ); document.write( "speed helicopter = 120 mph. time = t-1.5\r \n" ); document.write( "\n" ); document.write( "80t = 120(t-1.5)\r \n" ); document.write( "\n" ); document.write( "80t = 120t - 180\r \n" ); document.write( "\n" ); document.write( "40t = 180\r \n" ); document.write( "\n" ); document.write( "t= 4.5 hours\r \n" ); document.write( "\n" ); document.write( "add 4.5 hours to 9.30 \n" ); document.write( "ie 2.00 pm\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |