Jug

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Frequently Asked Questions...

How to solve this water jug brain teaser?

You have 3 water jugs, one 16 liters, one 9l and one 7l. The 16l one is full of water. What are the steps you must take to get 8l of water in the 16l and 9l water jugs?
There are no markings on the jugs, and you cannot just guess the amounts in each jug.

This one is driving me crazy, so please help!


Best Answer...

Answer:

Using (Jug9, Jug7, Jug16):

Fill the 7 from the 16 (0, 7, 9)
Pour the 7 into the 9 (7, 0 9)
Fill the 7 from the 16 (7, 7, 2)
Top off the 9 from the 7 (9, 5, 2)
Pour the 9 into the 16 (0, 5, 11)
Pour the 7 into the 9 (5, 0, 11)
Fill the 7 from the 16 (5, 7, 4)
Fill the 9 from the 7 (9, 3, 4)
Pour the 9 into the 16 (0, 3, 13)
Pour the 7 into the 9 (3, 0, 13)
Fill the 7 from the 16 (3, 7, 6)
Fill the 9 from the 7 (9, 1, 6)
Pour the 9 into the 16 (0, 1, 15)
Pour the 7 into the 9 (1, 0, 15)
Fill the 7 from the 16 (1, 7, 8)
Pour the 7 into the 9 (8, 0, 8)