If each of the six flights starts from its origin city twice each day, once at 6:00 AM and once at 1:00 PM, what is the minimum number of hours required for a person to travel from Bhopal to Singapore using these six flights?
Explanation:
Case 1: One can start from Bhopal at 6 am. Day 1: 6 am from Bhopal → Sydney at 2 pm Day 2: 6 am from Sydney → France at 11 am Day 2: 1 pm from France → Singapore at 8 pm.
The person starts at 6 am on Day 1 and reaches destination at 8 pm on Day 2. ∴ Total travel duration = 38 hours.
Case 2: One can start from Bhopal at 1 pm. Day 1: 1 pm from Bhopal → Sydney at 9 pm Day 2: 6 am from Sydney → France at 11 am Day 2: 1 pm from France → Singapore at 8 pm.
The person starts at 1 pm on Day 1 and reaches destination at 8 pm on Day 2. ∴ Total travel duration = 31 hours.
Hence, 31.
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