SOLUTION: two cars leave a gas station at the same time. one car travels east at 50mph while the other car travels west. after 3 hours they are 345 miles apart. how fast is the westbound ca

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Question 512606: two cars leave a gas station at the same time. one car travels east at 50mph while the other car travels west. after 3 hours they are 345 miles apart. how fast is the westbound car traveling?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
think of the eastbound car as being
stationary and the westbound car as
traveling at the sum of their speeds
Let +s+ = speed of westbound car
-----------------------------
+d+=+r%2At+
+345+=+%28+50+%2B+s+%29%2A3+
+345+=+150+%2B+3s+
+3s+=+195+
+s+=+65+
65 mi/hr is the speed of westbound car