SOLUTION: Two cars leave town at the same time going in the same direction on the same road. One travels 32mi/h and the other travels 47mi/h. In how many hours will they be 69 miles apart?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Two cars leave town at the same time going in the same direction on the same road. One travels 32mi/h and the other travels 47mi/h. In how many hours will they be 69 miles apart?      Log On


   

Question 126421This question is from textbook
: Two cars leave town at the same time going in the same direction on the same road. One travels 32mi/h and the other travels 47mi/h. In how many hours will they be 69 miles apart? This question is from textbook

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
d = distance the faster one travells
t = time to get 69 miles apart
(1)d+=+47t
d+-+69+=+32t
(2)d+=+32t+%2B+69
Set d in (1) = d in (2)
47t+=+32t+%2B+69
15t+=+69
t+=+4.6 hrs
.6%2A60+=+36
In 4 hours and 36 minutes they will be 69 mi apart