Subj:.....Milkman's
Puzzle (S406)
Written by Sam Loyd (18411911)
At: http://thinks.com/puzzles/loyd/loyd.htm
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....Drawing
from the book
...."More
Mathematical Puzzsles of Sam Loyd
....Edited
by Martin Gardner
....From:
Dover Publications in 1960........ 

Honest John says:
"What I don't know about milk is scarcely worth mentioning," but he was
flabbergasted one day when each of two ladies asked him for two quarts
of milk. One lady had a fivequart pail and the other had a fourquart
pail. John had only two tengallon cans, each full of milk.
How did he measure out exactly two quarts of milk for each lady?
It is a juggling trick
pure and simple, devoid of trick or device, but it calls for much cleverness
to get two quarts of milk into those two pails without making use of any
receptacles other than the two pails and the two full cans.
THE SOLUTION
Call one tengallon
milk can A and the other B,
then proceed as follows:
Fill 5 pail from can A.
Fill 4 pail from 5 pail, leaving 1 quart in 5 pail.
Empty 4 pail into can A.
Pour the quart from 5 pail into 4 pail.
Fill 5 pail from can A.
Fill 4 pail from 5 pail, leaving 2 quarts in 5 pail.
Empty 4 pail into can A.
Fill 4 pail from can B.
Pour from 4 pail into can A until A is filled,
leaving 2 quarts in 4 pail.
Each pail now holds
2 quarts, can A is full, and can B
is missinf 4 quarts.
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