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U2 Concert - Solution |
| 1 min and 2 min cross the bridge | Time so far: 2 mins |
| 1 min returns | Time so far: 3 mins |
| 5 min and 10 min cross the bridge | Time so far: 13 mins |
| 2 min returns | Time so far: 15 mins |
| 1 min and 2 min cross the bridge | Time so far: 17 mins |
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© 2002 Ian Hadden |