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Measuring 7 Units Using 9 And 4 Unit Jugs

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Orangy | 09:56 Sun 03rd Jul 2016 | Quizzes & Puzzles
3 Answers
HI
I have a 4 unit jug and a 9 unit jug and unending water. With no half filling or guesstimating though water can be discarded, how do I end up with 7 units?
Thanks in advance.
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Fill the 4 and tip it into the 9
Fill the 4 again and tip it into the 9 which now has 8
fill the 4 and tip it intoi the 9 until full (ie transfer 1)
This now leaves 3 in the 4 jug
Empty the 9
Tip the 3 in the 4 jug at present into the 9
Fill the 4 and tip this into the 9
There is now 7 in the 9 jug
Question Author
Been at it so long, I missed the obvious. Brilliant
You're welcome

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