Question 465224: You are given a five gallon pail and a three gallon pail, both of which are unmarked. How can you fetch four gallons of water in one trip?
I am supposed to use both buckets and I am not to estimate an amount because the buckets are not marked. I thought that I could fill the three gallon bucket and put it inside the five gallon bucket and fill the five gallon bucket to the top of the three gallon bucket but I'm not sure that this would give me four gallons. I also thought about fillig both buckets to get eight gallons but I don't think that that is what she's looking for. Help! I'm stuck!
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! You are given a five gallon pail and a three gallon pail, both of which are unmarked.
How can you fetch four gallons of water in one trip?
:
How about this?
Fill the 5 gal, pour into the 3 gal to leave 2 gal remaining in the 5 gal pail
Empty the 3 gal pail, pour the the remaining 2 gal into the 3 gal pail
Fill the 5 gal pail, pour 1 gal into the 3 gal pail which has 2 gal in it, which fills it
This leaves exactly 4 gal remaining in the 5 gal pail
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