SOLUTION: Two cars leave from the same point, headed in opposite directions, Car A is traveling 50 mph and Car B is traveling at 60 mph. How many hours will the two cars be 440 miles apart?

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Question 549111: Two cars leave from the same point, headed in opposite directions, Car A is traveling 50 mph and Car B is traveling at 60 mph. How many hours will the two cars be 440 miles apart?
I know the answer is 4 hours but I do not know HOW. What is the formula?
Found 2 solutions by Edwin McCravy, josmiceli:
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
Two cars leave from the same point, headed in opposite directions, Car A is traveling 50 mph and Car B is traveling at 60 mph. How many hours will the two cars be 440 miles apart?
I know the answer is 4 hours but I do not know HOW. What is the formula
Their rate of separation is the sum of their speeds:
 
50mph + 60mph = 110mph

time = 

time = 

time = 4 hours.

Edwin
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
you can think of this as one car standing still and the other
driving away at the sum of their speeds
Let = time when they are mi apart



They will be 440 mi apart in 4 hrs
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