SOLUTION: A car started out from Memphis toward Little Rock at the rate of 60 km/h. A second car left from the same point 2 hours later and drove along the same route at 75 km/h. How long di

Question 927296: A car started out from Memphis toward Little Rock at the rate of 60 km/h. A second car left from the same point 2 hours later and drove along the same route at 75 km/h. How long did it take the second car to overtake the first car?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
first car distance covered in 2 hours:
s = d/t
d = st
d = 60*2 = 120 km
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speed of second car relative to the first car:
75 - 60 = 15 km/hr
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time taken by the second car to overtake the first car:
t = d/s
t = 120/15
t = 8 hours
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