SOLUTION: Alice travels from the train station to the bus depot at a speed of 20 km/hr starting at 12 noon. Buses start from the depot at 6 A.M towards the train station. There is a bus ev

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Question 833435: Alice travels from the train station to the bus depot at a speed of 20 km/hr starting at 12 noon.
Buses start from the depot at 6 A.M towards the train station. There is a bus every half hour
and it travels at a speed of 25 km/hr. The distance between the depot and the train station is
100 km. How many buses will Alice pass before she reaches the depot?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Alice travels from the train station to the bus depot at a speed of 20 km/hr starting at 12 noon.
Buses start from the depot at 6 A.M towards the train station. There is a bus every half hour
and it travels at a speed of 25 km/hr. The distance between the depot and the train station is
100 km. How many buses will Alice pass before she reaches the depot?
***
traveling 100 km at 20 km/hr takes 5 hrs (station to depot)
traveling 100 km at 25 km/hr takes 4 hrs (depot to station)
After 4 hrs of traveling, alice will have passed 8 buses.
After traveling for another hour alice will pass one more bus for a total of 9 buses passed.