Math / Puzzle Question

[Spoofee]

I was reading up on possible interview questions and came up with something you guys might enjoy

Goal : To get everyone on the other side of the bridge fast as you can.

There are four people on one side.
- only one~two people can cross the bridge at a time.
- there is one flashlight and one of the people that's crossing the bridge must be carrying it.
- Each person crosses the bridge at different speeds. One person takes 1 minute, another takes 2 minutes, another takes 5 minutes, and another takes 10 minutes.
- If two people are crossing the bridge at the same time, the faster person must go at the rate of the slower person.

How fast can you get them all across the bridge?
- 1 minute walker
- 2 minute walker
:tongue: - 5 minute walker
- 10 minute walker

 

[Apocalypse716]

+ cross bridge (2 mins)
comes back with flashlight (1 min)
+ :tongue: cross bridge (5 mins)
goes back with flshlight (1 min)
+ cross bridge (10 mins)

=19 mins


Is that right?

 

[spazntwitch]

I'd just make 'em all jump. LOL

Apocalypse716 seems to have the correct answer.

 

[Big Daddy]

If I was asked this question in an interview, I'd quit. :tongue:

 

[penpen]

how long is this bridge? i mean, can two people cross the bridge, then throw the flashlight back to the other two people?

 

[tvashb01]

i got the 19 when i saw this this morning, but didnt want to type it on here

 

[clubchick]

good thing speedwalker is there with her flashlight to escort the guys across

 

[Scoopons]

" the obvious answer is not the right answer"

 

[penpen]

" the obvious answer is not the right answer"

Oh no, it's one of *those* types of questions.

 

[Spoofee]

Yes, this is the answer~

- Send the 1 minute walker and 2 minute walker ( 2 minutes )
- 1 Minute walker returns ( 3 minutes )
- Send 5 minute walker and 10 minute walker ( 13 minutes )
- 2 minute walker returns ( 15 minutes )
- Send 1 Minute and 2 Minute Walker ( 17 minutes )

 

[Kage_]

What is the point of asking dumb questions like this for an interview?

Kage_

 

[Big Daddy]

What is the point of asking dumb questions like this for an interview?

Kage_

To see if you're a Spoofee regular.

 

[Rockstar]

To see if you're a Spoofee regular.

LOL LOL LOL LOL

That will make or break an interview! Of course you have to be!