document.write( "Question 304487: Train A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40mph and train B is traveling at 48 mph. Train A passes a station at 7:20am. If Train B passes the same station at 7:35am, at what time will train B catch up with train A? \n" ); document.write( "
Algebra.Com's Answer #218179 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Train A and B are traveling in the same direction on parallel tracks. \n" ); document.write( " Train A is traveling at 40mph and train B is traveling at 48 mph. \n" ); document.write( " Train A passes a station at 7:20am. \n" ); document.write( " If Train B passes the same station at 7:35am, at what time will train B catch up with train A? \n" ); document.write( ": \n" ); document.write( "from the given information, we know that train B is 15 min (1/4 hr) behind \n" ); document.write( " train A, when train A passes the station \n" ); document.write( ": \n" ); document.write( "The distance between the trains at this time: \n" ); document.write( ": \n" ); document.write( "Let t = time required for train B to catch train a \n" ); document.write( ": \n" ); document.write( "write a distance equation: Dist = speed * time \n" ); document.write( ": \n" ); document.write( "Train B travel dist = Train A travel dist + 12 mi \n" ); document.write( "48t = 40t + 12 \n" ); document.write( "48t - 40t = 12 \n" ); document.write( "8t = 12 \n" ); document.write( "t = \n" ); document.write( "t = 1.5 hr or 1 hr 30 min \n" ); document.write( ": \n" ); document.write( "7:20 + 1:30 = 8:50 am, B catches A \n" ); document.write( " \n" ); document.write( " |