Question 1145147: How can you obtain 6-gallons of cider from a tank if you have only a 4-gallon container and a 9-gallon container? Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! 1. Fill the 9 gallon container
2. Fill the 4 gallon container from the 9 gallon container
3. Empty the 4 gallon container into the tank
4. Repeat steps 2 and 3
5. Now there is 1 gallon in the 9 gallon container
6. Pour the 1 gallon in the 9 gallon container into the 4 gallon container
7. Fill the 9 gallon container
8. Fill the 4 gallon container from the 9 gallon container, this leaves 6 gallons in the 9 gallon container
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Note the 4 gallon container had 1 gallon in it to before step 8
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