please empty your brain below

Guesses to the nearest 5 minutes, thanks.
4h25
5h35
5hrs 45 mins
5h 15m
6h20
7h15m
5 hours 20 minutes
7h 10m
5h 25m
6h 30m
6 hours 30 minutes
6hr 40m
6 hours 25 min.
I'm going to low-ball it. 3h 45m
6h 5m
5h 50m
7h 25m
4h 40m
5h 05m
5h 40m
7h 35m
5h 55m
4hrs 25mins
4 hours 55 minutes.
6h 15m
4 hours 5 minutes
3 hours 20 mins
5 hours 25 minutes.

Regards
8hr 05mins
8 hours 10 minutes
4 hours
7h30m
6h 45m
5h 30m
4h 40m
4h 45m
5 hours 50 minutes
4 hrs 5 mins
7h 55m
5hrs 10m
6 hr 10 mins
5h55m
4h00m
5 hours
TIME UP!

The correct answer was 5 hours 25 minutes.
Congratulations to James and zin92.
Both bang on!
The usual approximation is that any tube trip takes two minutes per stop.

5 hrs 25 = 325 minutes
50 mins interchange + 80 mins waiting + 97 stops x 2 minutes = 324 minutes.

Confirming, impressively, that the rule is accurate to within 1%.










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