SOLUTION: Two cars travel at the same distance. The first car travels at 40mph and reaches its destination in (t) hours. The second car travels at a rate of 55 mph and reaches its destinatio

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Question 485340: Two cars travel at the same distance. The first car travels at 40mph and reaches its destination in (t) hours. The second car travels at a rate of 55 mph and reaches its destination 3 hours earlier than the first car. How long does it take for car one to reach its destination?

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
D= r*t
First car
D= 40t
Second car
D= 55(t-3)
40t=55(t-3)
40t=55t-165
40t-55t=-165
-15t=-165
t= 11 hours
m.ananth@hotmail.ca