SOLUTION: WORK 3)Two executives in cities 400 miles apart drive to a business meeting at a location on the line between their cities. They meet after 4 hrs. Find the speed of each car if on

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: WORK 3)Two executives in cities 400 miles apart drive to a business meeting at a location on the line between their cities. They meet after 4 hrs. Find the speed of each car if on      Log On


   

Question 412383: WORK
3)Two executives in cities 400 miles apart drive to a business meeting at a location on the line between their cities. They meet after 4 hrs. Find the speed of each car if one car travels 20 miles per hour faster than the other does.



Thank you in advance! Hoping for your immediate reply.
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

assume speed of one car = x miles per hour
then speed of another = x+20 miles per hour
then 4(x + x+20) = 400
=> 8x+ 80 = 400
=> 8x = 320

=> x = 320/8= 40
so, speed of cars ... 40 and 60