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Home /
Puzzle
Help / |
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I was wondering if you can help me
solve this puzzle:
Grandfather is a very hard-boiled customer. In fact, his eggs must be
boiled for exactly 15 minutes, no more, no less. One day he asks you
to prepare breakfast for him, and the only timepieces in the house are
two hourglasses. The larger hourglass takes 11 minutes for all the
sand to descend; the smaller takes 7 minutes. What do you do?
...Grandfather grows impatient...
Corrine |
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* This puzzle is derived from the
old class of puzzles with measuring some value using several other
constant values like different weights, barrels, cups, etc., and is
one of several known versions with hourglasses. |
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Mini-Contest 3 -
Grandfather's Breakfast is FINISHED |
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| It was our
third mini-contest. Now we have the first six correct
answers and propose this contest's results and some
details about
the puzzle
and its
solution.
With this Mini-Contest 3 is finished. |
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The
winners are:
1. Jensen Lai.
2. Hüsnü Sincar.
3. KT - "ktendall".
4. Tamie D.
5. Jane Average.
6. Nicole Takahashi.
7. Matt Kaspar.
We've got an almost correct solution from Sandra Payne,
but she did say nothing about the moment when to put the
eggs into the boiling water. See details at
the solution page.
Also we've got a correct solution from Matt Kaspar before
our Mini-Contest 3 was finished, but accidentally his
message was put into a folder with another contest, so
when we posted the results and the names of the first six
correct solvers his name wasn't included. Our apology. We
add his name to the winners list. |
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Posted: February 2, 2002 | Last Updated:
July 31, 2007 |
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