Question 1
A traveler needs to go from City A to City D. The transport schedule is:
- T1: City A to City B, Departs 06:30, Arrives 10:16 AM
- T2: City A to City C, Departs 06:00, Arrives 9:52 AM
- T3: City B to City D, Departs 16:00, Arrives 6:57 PM
- T4: City B to City C, Departs 14:30, Arrives 4:32 PM
- T5: City C to City D, Departs 12:00, Arrives 3:00 PM
- T6: City C to City B, Departs 13:30, Arrives 4:01 PM
- T7: City E to City D, Departs 12:30, Arrives 3:01 PM
- T8: City E to City B, Departs 10:30, Arrives 12:46 PM
Minimum connection time is 45 minutes. What is the earliest arrival time at City D?
Step-by-step solution:
Network Path Analysis:
1. Identify all possible routes from City A to City D:
- City A→City B -> City B→City D
- City A→City C -> City C→City D
- City A→City B -> City B→City C -> City C→City D
2. Best route found:
- T2: City A to City C (06:00 - 9:52 AM)
- Connection time: 128 minutes
- T5: City C to City D (12:00 - 3:00 PM)
Earliest arrival: 3:00 PM
Key Strategy: Enumerate all possible routes, verify connection times meet minimum requirements.
Network Path Analysis:
1. Identify all possible routes from City A to City D:
- City A→City B -> City B→City D
- City A→City C -> City C→City D
- City A→City B -> City B→City C -> City C→City D
2. Best route found:
- T2: City A to City C (06:00 - 9:52 AM)
- Connection time: 128 minutes
- T5: City C to City D (12:00 - 3:00 PM)
Earliest arrival: 3:00 PM
Key Strategy: Enumerate all possible routes, verify connection times meet minimum requirements.