Three Jugs Puzzle

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Click a jug         to attach the taps.

1. The pouring stops automatically if one of the jugs becomes full.

2. Always let the tap stop automatically to keep measurements precise.

3. The puzzle is solved when the 5L and 8L jugs each contain 4 liters of juice.

1.	Abbot Albert wrote a version of this puzzle ~1240. [5]
2.	Niccolò Fontana Tartaglia wrote a version of this puzzle in the 1500s. [4]
3.	In the film Die Hard With a Vengeance (1995), New York City Police Lieutenant John McClane (Bruce Willis) and shopkeeper Zeus Carver (Samuel L. Jackson) team up and solve a version of this puzzle to stop a bomb from exploding.
4.	Professor Stewart's Hoard of Mathematical Treasures (2010), by Ian Stewart.
5.	Rediscovering Mathematics: You Do the Math (2011), by Shai Simonson.

You have an 8 liter jug full of water, and two empty jugs which can hold 3 and 5 liters respectively. Measure precisely 4 liters of water.