In the puzzle Four people on a Bridge we met four people who needed to cross a bridge at night. In this puzzle, there are five people who must cross two sequential bridges at night. As in the original puzzle, there are some hindrances:

The bridges can only support two people crossing at a time.

Each person has a different speed in which they can cross: 10 minutes, 7 minutes, 5 minutes, 2 minutes, and 1 minute.

They have only two flashlights to share among them.

What is the shortest amount of time it will take for all five people to cross both bridges?

(In reply to Solution...? by Cougar Draven)

How come the 7-minute person reach the otherside leaving the 10-minute person alone on the bridge(without flash light)

Posted by Gururaj on 2005-08-03 07:48:30