If there are 4 people who want to cross a bridge and I have 17 minutes to cross all of them to the other side, how can I cross all of them over in 17 minutes.
Note: maximum of two people can cross at one time. Any party who crosses, either 1 or 2 people, must have the ashlight with them. The ashlight must be walked back and forth, it cannot be thrown across or otherwise transferred to the
other side. Each person walks at a different speed. A pair must walk together at the rate of the slower person's pace.
Person 1: 1 minute to cross Person 2: 2 minutes to cross Person 3: 5 minutes to cros

Question

If there are 4 people who want to cross a bridge and I have 17 minutes to cross all of them to the other side, how can I cross all of them over in 17 minutes. 
Note:  maximum of two people can cross at one time. Any party who crosses, either 1 or 2 people, must have the ashlight with them. The ashlight must be walked back and forth, it cannot be thrown across or otherwise transferred to the
other side. Each person walks at a different speed. A pair must walk together at the rate of the slower person's pace.
Person 1: 1 minute to cross Person 2: 2 minutes to cross Person 3: 5 minutes to cros

anonymous · Answer

person 4: 10 min to cross