JUGs????????????

Question: JUGs???????????? See if you cansolve this problem and explain. You have 3 juugs of water that hold 12, 9, and 4 quarts respectively. The jugs are unmarked so you can't tell how much water is in each just by looking unless they are full. The 12 qt. jug is full of water. There is no other water supply. Explain how to get two measures of exactly 6 quarts each. Note: The 9 and 4 qts are empty.

Answer: 12-0-0 - Start. 3-9-0 - Fill 9 quart jug. 3-5-4 - Fill 4 quart jug from 9 quart jug. 7-5-0 - Empty 4 quart jug into 12 quart jug. 7-1-4 - Fill 4 quart jug from 9 quart jug. 11-1-0 - Empty 4 quart jug into 12 quart jug. 11-0-1 - Empty 9 quart jug into 4 quart jug. 2-9-1 - Fill 9 quart jug from 12 quart jug. 2-6-4 - Fill 4 quart jug from 9 quart jug. 6-6-0 - Empty 4 quart jug into 12 quart jug.

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