On Sunday, February 12, 2012 00:22:31 Paul Rittman wrote: > The last few times I went shopping for breakfast cereal, I tried to compare > the prices of various cereals on a per-ounce or –gram basis. Tonight, one > cereal I bought was $2.84, and the package said it weighed 13 ounces or 368 > grams. Calculating the price per ounce seems to be much easier than > calculating the per gram price. I was able to quickly see that it costs > about 20 cents an ounce (quite a bit cheaper than most other cereals) by > multiplying 13 x 2, and then adding a zero. I then decided to try to get > the cost per gram, but decided not to even try to put 368 into 284.
For a rough answer: drop the last digit, you get 28/36. Divide top and bottom by 4, that's 7/9. In decimal, that's 0.777.... I have a limit of 1 ¢/g for many foods. I buy a local whole-wheat bread if it's available; if not, I go to the freezer and check ingredient lists and prices. The local bread is 239 ¢/680 g. Some of the breads in the freezer are too expensive; others contain things I'd rather avoid. Pierre -- The Black Garden on the Mountain is not on the Black Mountain.
