Die Hard: 4 Gallons or Death
You have a 3 gallon bucket and a 5 gallon bucket – neither have any measurement markers so all you know is that when either one of them is full, you have 3 and 5 gallons respectively.
There is a bomb (of course, why wouldn’t there be).
You can defuse the bomb if you put exactly 4 gallons worth of water weight on top of the bomb… any more or less will set it off.
Luckily the bomb is located next to a big water fountain – so you have unlimited water.
By moving water back and forth between the buckets, how can you get to 4 gallons, precisely?
about 1 year ago
Fill 3 gal, dump it in 5,
Fill 3 gal, fill up 5 (2 gal to fill up- 1 gal left in 3 gal bucket)
Empty 5 gal container
Put 1 gal left in 3 gal container in 5 gal container
Fill 3 gal container and put in 5 gal container
=4 gal
about 1 year ago
Fill the 5gal
Transfer to 3gal
Empty 3gal
Dump remaining 2gal from 5gal into 3gal
Fill 5gal
Fill 3gal from 5gal
Leaving 4gal in 5galthe bucket….
about 1 year ago
Fill the daddy bucket with 5 gallons. Pour this bucket into the 3 gallon lil guy. This leaves 2 gallons in the daddy bucket. Empty the lil guy bucket and pour the 2 gallons into it.
Fill the daddy bucket again and then use that bucket to top off the remaining one gallon in the 3 gallon bucket. This leaves you with 4 gallons in the daddy bucket.
Buckets!
about 1 year ago
Yes yes and yes… all the answers above are the same and correct… BUT there is another way of doing this as well…
Fill up the 3 gallon lil guy and dump it in the 5
Do this again – but only fill the 5 up to it’s limit which will leave 1 gallon in the lil guy
Then empty the 5 gallon big guy and put the 1 gallon that’s in the lil guy into the big guy.
Fill the lil guy up to 3 gallons and pour it into the 5′er (which has 1 gallon in it) and you’re #winning.