To feed oneself for a week.

 March 27, 2007 personal

\newcommand{\N}{\mathbb{N}} \newcommand{\Z}{\mathbb{Z}} \newcommand{\Q}{\mathbb{Q}} \newcommand{\R}{\mathbb{R}} \newcommand{\C}{\mathbb{C}}

\newenvironment{question}[1][]{\par\textbf{Question (#1).}}{} \newenvironment{theorem}[1][]{\par\textbf{Theorem (#1).}}{} \newenvironment{lemma}[1][]{\par\textbf{Lemma (#1).}}{} \newenvironment{proof}{\textit{Proof.}}{}

The question is: how little can I spend to feed myself for one week? I ought to eat 2000 calories/day, so I’ll need to purchase 14,000 calories/week.

Here’s a “healthy” option: just eat apples. One ounce of apple has 15 calories, so I’ll need to eat 58 pounds of apples per week; I might be able to get this many apples for 29 dollars.

But I can do better! One “Take 5” candy bar is delicious and contains 210 calories, so I’ll need to eat 66 candy bars per week; in the best of all possible worlds, I might be able to purchase this many candy bars for 22 dollars.

I could buy a pound of mayonnaise for two dollars. Apparently a pound of mayonnaise has 3200 calories, so I could get more than enough calories for just ten dollars a week.

Presumably I could do significantly better with potatoes or with rice?