A loaf of bread has, say, 24 slices in it. If you ate two of them, then the cost of bread was that day $0.34, when you amortize the loaf of bread over twelve days. If you can find a $2 loaf of bread with 24 slices, it's only about $0.08 for a slice of bread.
But yes, I agree -- if you actually had to maintain this budget, you'd probably buy one kind of breakfast, lunch, and dinner and eat it every day for a week.
That's the trouble with this article; With the dependence on buying everything in bulk (and somehow using it all up before it goes off), it appears to be more of a fun theoretical calculation than a practical weekly diet.
Here's a loaf from Tesco for fifty pence (seventy-seven US cents). Looks like twenty or so slices, so call it 2.5 pence per slice; about four cents a slice.
A loaf of bread has, say, 24 slices in it. If you ate two of them, then the cost of bread was that day $0.34, when you amortize the loaf of bread over twelve days. If you can find a $2 loaf of bread with 24 slices, it's only about $0.08 for a slice of bread.
But yes, I agree -- if you actually had to maintain this budget, you'd probably buy one kind of breakfast, lunch, and dinner and eat it every day for a week.