Henry Ernest Dudeney/Puzzles and Curious Problems/233 - The Nougat Puzzle/Solution
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Puzzles and Curious Problems by Henry Ernest Dudeney: $233$
- The Nougat Puzzle
- A block of nougat is $16$ inches long, $8$ inches wide, and $7 \tfrac 1 2$ inches deep.
- What is the greatest number of pieces that I can cut from it measuring $5$ inches by $3$ inches by $2 \tfrac 1 2$ inches?
Solution
$24$ pieces.
Proof
Cut off and throw away a piece $1$ inch thick off the end, leaving a block $15$ inches long.
Then cut the block into two pieces:
- $15$ inches long, $5$ inches wide, and $7 \tfrac 1 2$ inches deep
- $15$ inches long, $3$ inches wide, and $7 \tfrac 1 2$ inches deep.
The former can be cut into $15$ piece of nougat $5$ inches by $3$ inches by $2 \tfrac 1 2$ inches.
The latter can be cut into $9$ piece of nougat $5$ inches by $3$ inches by $2 \tfrac 1 2$ inches.
$\blacksquare$
Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Solutions: $233$. -- The Nougat Puzzle
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Answers: $321$. The Nougat Puzzle