Thursday, May 7, 2009

Riddle me this

Here's a riddle Hai li told me today:

There are 5 people on one side of a bridge at night. They need to cross, but they only have one light. They can cross the bridge two at a time, but someone must bring the light back after each trip. Each person travels at a different speed across the bridge.
Person #1 - 1 second
Person #2- 3 seconds
Person #3 - 6 seconds
Person #4- 8 seconds
Person #5- 12 seconds

What is the fastest time possible for all the people to get across the bridge? The people must walk on their own, they cannot be carried.
Good luck!

4 comments:

Jenni said...

32 Seconds?

Connected but Apart. said...

nope.

Wally said...

I got it! 29 Seconds!

The Jaramillo Family said...

Just found your blog again.
This pic is awesome. Ed and I are super jealous. Maybe I can do what you are doing in 10 years :)