Question 982937
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I think you are saying that you have a 10 liter can filled with water, an empty 7 liter can, and an empty 3 liter can.  You want to end up with exactly 5 liters in the 10 liter can and 5 liters in the 7 liter can.
<pre>
Contents after instruction     Instruction
10L       7L        3L         Start
 10        0         0         Fill 7 from 10
  3        7         0         Fill 3 from  7
  3        4         3         Empty 3 into 10
  6        4         0         Fill 3 from  7
  6        1         3         Empty 3 into 10
  9        1         0         Empty 7 into 3
  9        0         1         Fill 7 from 10
  2        7         1         Fill 3 from 7
  2        5         3         Empty 3 into 10
  5        5         0
</pre>
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \