Crossing A Dark Bridge – Hint

Remember our intrepid explorers? They were trying to cross a rickety bridge with a run-down torch. If you need a reminder of the problem, find it here.

If you’re struggling with it, here’s a hint to help you.

Presumably you’re working on the principle that 2 people cross together and one brings it back for two more to cross, repeating that a third time. Tricky to get the time to 17 minutes, though, isn’t it?

Remember, the person who brings the torch back, doesn’t have to be someone who has immediately crossed the bridge.