document.write( "Question 262982: Two cars are 15 kms apart. One is turning at a speed of 50kmph and the other at 40kmph . How much time will it take for the two cars to meet? \n" ); document.write( "
Algebra.Com's Answer #193742 by richwmiller(17219) You can put this solution on YOUR website! It is not clear if they are heading towards each other or heading to the same place and who is further ahead. \n" ); document.write( "If they are heading towards each other. \n" ); document.write( "50t+40t=15 \n" ); document.write( "90t=15 \n" ); document.write( "t=1/6 hr =10 minutes if heading towards each other\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If the slower car is 15 km ahead \n" ); document.write( "then 40t+15=50t \n" ); document.write( "15=50t-40t \n" ); document.write( "15=10t \n" ); document.write( "15/10=t \n" ); document.write( "1.5 hrs forthe 50 kph to catch up\r \n" ); document.write( "\n" ); document.write( "if the 50 kph is ahead by 15k \n" ); document.write( "50t+15=40t \n" ); document.write( "15=-10t \n" ); document.write( "15/-10=t \n" ); document.write( "-1.5 hr=t \n" ); document.write( "time can't go backwards so the slower car can never catch up. \n" ); document.write( " \n" ); document.write( " |