Question 1
A traveler needs to go from City A to City D. The transport schedule is:
- T1: City A to City B, Departs 10:00, Arrives 12:00 PM
- T2: City A to City C, Departs 08:00, Arrives 10:02 AM
- T3: City B to City D, Departs 10:30, Arrives 12:41 PM
- T4: City B to City C, Departs 15:00, Arrives 4:43 PM
- T5: City C to City D, Departs 13:00, Arrives 2:30 PM
- T6: City C to City B, Departs 15:00, Arrives 5:20 PM
- T7: City E to City D, Departs 15:30, Arrives 5:57 PM
- T8: City E to City B, Departs 15:00, Arrives 5:59 PM
Minimum connection time is 30 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 (08:00 - 10:02 AM)
- Connection time: 178 minutes
- T5: City C to City D (13:00 - 2:30 PM)
Earliest arrival: 2:30 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 (08:00 - 10:02 AM)
- Connection time: 178 minutes
- T5: City C to City D (13:00 - 2:30 PM)
Earliest arrival: 2:30 PM
Key Strategy: Enumerate all possible routes, verify connection times meet minimum requirements.