Bus route A starts at the bus station and takes 40 minutes.
Bus route B also starts at the bus station and takes 30 minutes.
Both routes begin at 9��, therefore leave the bus station at the same time.
At what time do both routes leave the bus station at the same time for the fourth time in
the day?
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Answer:
r=speed of each bus
2r=distance from each city to point P
4r=distance between two cities
2nd day early bus distance to meeting=2r+24
2nd day late bus distance to meeting=2r-24
2r+24-(2r-24)=48 miles difference between distances covered
in exactly one additional hour early bus covers 48 miles more than late bus
thus, r=48 mph
4r=192 miles distance between two cities
E
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