Hi,

Two cars leave Memphis from exactly the same spot at exactly the same time,

 one traveling north at an average speed of 70 mph and the other traveling south at an average speed of 65 mph. 

Approximately how long does it take before the cars are 270 miles apart?

Note: D = rt and time is the same for both

  70t + 65t = 270mi     || Solve for t

  

RELATED QUESTIONS

Two cars leave Memphis from exactly the same spot at exactly the same time, one traveling  (answered by Alan3354)

Two cars leave Memphis from exactly the same location, at the same time. One travels... (answered by josmiceli)

Two cars leave St. Louis from exactly the same spot at exactly the same time, one... (answered by checkley77)

Two automobiles leave St. Louis from exactly the same spot at exactly the same time, one... (answered by FrankM)

Please help me.

Two cars leave from the same spot at the same time, traveling on... (answered by ankor@dixie-net.com)

two cars leave chicago at the same time traveling opposite directions. one travels at an... (answered by Edwin McCravy)

Two cars leave Binghamton at the same time headed in the same direction. One travels at... (answered by rfer)

two cars started from the same point and traveled in a straight path for exactly 2 hrs ,... (answered by Alan3354,fractalier)

Two cars leave Atlanta at the same time. One is traveling north and another is traveling... (answered by fractalier)