document.write( "Question 1019316: Andrew and Derek live in two different cities that are 575 km apart. One day they both left at the same time and drove towards each other, Andrew travelling 15 km/h faster than Derek. If they met after 5 hours, how fast was each travelling? \n" ); document.write( "
Algebra.Com's Answer #635400 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Andrew and Derek live in two different cities that are 575 km apart.
\n" ); document.write( " One day they both left at the same time and drove towards each other, Andrew travelling 15 km/h faster than Derek.
\n" ); document.write( " If they met after 5 hours, how fast was each travelling?
\n" ); document.write( ":
\n" ); document.write( "let d = D's speed
\n" ); document.write( "then
\n" ); document.write( "(d+15) = A's speed
\n" ); document.write( ":
\n" ); document.write( "When they meet, the total distance they have traveled = 575 mi
\n" ); document.write( "Write a simple distance equation; dist = time * speed
\n" ); document.write( ":
\n" ); document.write( "D's dist + A's dist = 575
\n" ); document.write( "5d + 5(d+15) = 575
\n" ); document.write( "5d + 5d + 75 = 575
\n" ); document.write( "10d = 575 - 75
\n" ); document.write( "10d = 500
\n" ); document.write( "d = 500/10
\n" ); document.write( "d = 50 mph is D's speed
\n" ); document.write( ":
\n" ); document.write( "I'll let you find A's speed
\n" ); document.write( " \n" ); document.write( "
\n" );