SOLUTION: A car leaves Columbia at 1:00pm traveling at 45mph. A second car leaves Columbia at 2:00 traveling at 50mph. How long will it take the second car to overtake the first car?

Question 375156: A car leaves Columbia at 1:00pm traveling at 45mph. A second car leaves Columbia at 2:00 traveling at 50mph. How long will it take the second car to overtake the first car?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Car leaves Columbia at 1.00 pm 45 mph
second car leaves at 2.00pm 50 mph
..
In 1 hour first car has traveled 45 miles.
..
They are travelling in the same direction so effective speed = 50-45 = 5 mph.
every hour second car makes up 5 miles.
distance is 45 miles
..
time = d/r
t=45/5
t = 9 hours
..
m.ananth@hotmail.ca
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