A group of four people have to cross a bridge that will accommodate only two people at a time. It is night and there is one flashlight. Any party who crosses, either one or two people, must have the flashlight with it. (The flashlight must be walked back and forth; it cannot be thrown.)

Required:

Find a way for all four to get to the other side of the bridge in 17 minutes, given that person A takes 1 minute to cross the bridge, B takes 2 minutes, C takes 5 minutes, and D takes 10 minutes. When two people cross, they must go at the speed of the slower person

Question

Mathematics

Luciano Meadows

30 March, 16:46

A group of four people have to cross a bridge that will accommodate only two people at a time. It is night and there is one flashlight. Any party who crosses, either one or two people, must have the flashlight with it. (The flashlight must be walked back and forth; it cannot be thrown.)

Required:

Find a way for all four to get to the other side of the bridge in 17 minutes, given that person A takes 1 minute to cross the bridge, B takes 2 minutes, C takes 5 minutes, and D takes 10 minutes. When two people cross, they must go at the speed of the slower person

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Answers (1)

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Gibson · Answer 1

Step-by-step explanation: have person C take the flashlight and take person D to the other side of the bridge that have person C with the flashlight come back and take person B afterwards have B take a flashlight back and take a person a and then you'll have all of them on one side of the bridge