document.write( "Question 363417: Jim and Joe started on trips from San Francisco and traveled in opposite directions. Jim traveled 15 kph faster than Joe. After 4 hours, they were 420 km apart. How fast was each person traveling? \n" ); document.write( "
Algebra.Com's Answer #259150 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
Jim and Joe started on trips from San Francisco and traveled in opposite directions. Jim traveled 15 kph faster than Joe. After 4 hours, they were 420 km apart. How fast was each person traveling?
\n" ); document.write( "...\r
\n" ); document.write( "\n" ); document.write( "joe - speed =x kmph
\n" ); document.write( "Jim - speed = x+15 kmph
\n" ); document.write( "..
\n" ); document.write( "they are travelling opposite directions so add the speeds
\n" ); document.write( "x+x+15 = 2x+15
\n" ); document.write( "...
\n" ); document.write( "distance = 420 km
\n" ); document.write( "time = 4
\n" ); document.write( "..
\n" ); document.write( "t= d/r
\n" ); document.write( "420/2x+15=4
\n" ); document.write( "420=4(2x+15)
\n" ); document.write( "420=8x+60
\n" ); document.write( "420-60=10x
\n" ); document.write( "360=10x
\n" ); document.write( "x= 36 kmph speed of Joe
\n" ); document.write( "x+15 = 16+15 = 31 kmph = speed of Jim
\n" ); document.write( "...
\n" ); document.write( "m.ananth@hotmail.ca\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );