Erin, if I understand your question, yes, it is a given that regardless of
whether the liquids are mixed or not, that the teaspoon is a constant
volume. There is no 50-50 mixture involved: in the first move, a teaspoon
of milk is put into the coffee mug, which is then stirred throroughly, and a
teaspoon of the mixed liquid is then taken from the coffee mug and put into
the milk mug....
Lawry
> -----Original Message-----
> From: owner-moq_discuss@venus.co.uk
> [mailto:owner-moq_discuss@venus.co.uk]On Behalf Of Erin Noonan
> Sent: Saturday, July 13, 2002 5:09 PM
> To: moq_discuss@moq.org
> Subject: RE: MD A new puzzle...
>
>
> hi glenn,
> Okay I can not get this one through my head yet. I get lost
> reading Andrea's solution. This one I can imagine better but
> this one I am just wondering is taking half of that 50-50 mixture
> definitely 1 tsp? That is when 1 tsp of coffee and 1 tsp of milk
> are mixed until milk dissolves is it always 2 tsp?
>
> erin
>
> >I agree with Joćo's conclusion. After the two pourings, the amount of
> >coffee in mug1 is the same as the amount of milk in mug2. It follows
> >also that the amount of milk in mug1 is the same as the amount of coffee
> >in mug2.
>
> >While not a proof, the easiest way to see this is to try simple cases.
> >Suppose both mugs have 1 tsp of liquid. When you pour all the milk from
> >mug2 to mug1, mug1 now has a 50-50 mixture. When half of that is returned
> >to mug2, both mugs have a 50-50 mixture.
>
>
>
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