SOLUTION: Two cars start at a given point and travel in the same direction at average speeds of 40 miles per hour and 55 miles per hour. How much time must elapse before the two cars are 5

Question 163662This question is from textbook
: Two cars start at a given point and travel in the same direction at average speeds of 40 miles per hour and 55 miles per hour. How much time must elapse before the two cars are 5 miles apart? This question is from textbook

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Two cars start at a given point and travel in the same direction at average speeds of 40 miles per hour and 55 miles per hour. How much time must elapse before the two cars are 5 miles apart?
:
Let t = time (in hrs) for them to be 5 mi apart
:
Write a distance equation: Dist = speed * time
:
fast car dist - slow car dist = 5 mi
55t - 40t = 5
15t = 5
t =
t = hr, or we can say; 20m min
:
:
Check solution
*55 - *40 =
18 - 13 = 5 mi
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