Kami wants exactly 4 gallons of water for his crazy spell, however the idiot gives Mr.Popo a 5 gallon and a 3 gallon container. How can Mr. Popo return with exactly 4 gallons of water

Answer: First Mr. Popo must fill the 5 gallon container. Pour 3 gallons of the 5 gallon container into the 3 gallon conatiner leaving 2 gallons in the 5 galllon container. Then empty the 3 gallon container and pour the reamaining 2 gallons from the 5 gallon container into the 3 gallon container. Finally he must fill the 5 gallon container and pour 1 gallon into the 3 gallon container (filling the 3 gallon container since it had 2 gallons in it before) This leaving 4 gallons in the 5 gallon container.

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