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The requirements to do higher math and English units / Metric units conversions for grocery shopping price comparisons have me ruffled. And my college degree (admittedly many years ago...) was in mathematics.

We're almost out of ice cream.

I've just spent 15 minutes trying to decide whether to make an extra trip tonight to the grocery store (3 miles away, cost of gas not a factor) to use an expiring-today coupon $2.88 for 48 ounce container, for our second-choice brand. First-choice brand currently in the freezer is labeled 1.75 Quarts on the front, 14 half-cup (68 gm) servings on the back. How many ounces are in our first-choice brand?

I'm staying home, and will get our first-choice brand tomorrow, after we've run out.


Take your initial estimate, double that and add 20 percent.
It always takes more time and money than you think it should.
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1

14 x 68g. x 0.035273962 oz/1 gram = 33.6 oz.

Edited by: nutraxfornerves, to correct typo.


Nutrax
The plural of anecdote is not data.
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2

I went through something similar the other day with sugar, Midwesterner. I noticed that I was almost out, and I looked at the food section of the paper to see if anyone had sugar on sale. Jewel did: $2.99 for four pounds. (Jewel is owned by Albertson's.) The problem is that Jewel is about seven or eight blocks from where I live, and I no longer have a car, so I decided to go to Walgreen's and buy sugar there. It was $3.49, so I consoled myself with the thought that it was not so much more than at Jewel.

In today's paper, there is a Walgreen's insert that shows what's on sale there; sure enough, sugar for $2.49.

Don't stress out over that ice cream. Buy what you like, when you want it.

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3

#1 - 1.75 QT = 56 oz according to another conversion site. The online shopping site for my alternate grocery store (equally distant, different direction) shows our favorite brand as 56 oz. And the second-choice brand shows it contains 12 half-cup servings, which tends to reinforce the 56 oz answer. I'm thinking there's some hokey fluid-ounce and/or product density difference that's involved.

#2 - If you shop there frequently, ask with your receipt --Sometimes a store will offer in-store credit/rebate to honor a sale price for recent (within a few days) purchase.

BTW - That online shopping site for my alternate grocery store says our favorite brand is on sale there - Buy One Get One Free (BOGO) for a few more days, which will bring the price-per-ounce down to equal that now-expired coupon price. Makes me glad I stayed home last night. All I need to do now is clear freezer space for two containers.


Take your initial estimate, double that and add 20 percent.
It always takes more time and money than you think it should.
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4

Too late! I threw out my receipt, but thanks for the suggestion.

In the interest of economy, though I may just buy four pounds at the sale price to bring down the amortized price to $2.89 per four pound package (if my math is right).

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5

#4 - 2.99 (3.49 +2.49) = 5.98 /2 = 2.99 as a simple average. Need to know how long you store sugar to get amortized value. And an assumed cost of inflation and/or interest value to check on the time-value-of-money for the "investment" in an extra 4 pounds of sugar. Isn't math fun?


Take your initial estimate, double that and add 20 percent.
It always takes more time and money than you think it should.
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6

My brain is exploding! I just found a 50-cents-off coupon for that same brand of sugar in today's paper, so I will definitely buy that second bag of sugar now.

I use sugar in my morning coffee and in the tea that I drink later in the day, but I also bake a fair amount, so sugar doesn't go to waste here. Those eight pounds will be gone relatively quickly.

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7

1.75 QT = 56 oz according to another conversion site

That is 56 fluid+ ounces, which is a measure of volume, not weight. More information here. I assumed you wanted to know how much your carton +weighs not how much the volume is in ounces. That 56 ounce Brand B is no doubt 56 fluid ounces.

There's a problem with ice cream. There is no single volume-to-weight conversion for ice cream, because of different manufacturing processes. The more air you whip into it, the less weight per unit of volume. So all you have to go by in this instance is that a half cup is 68 grams.


Nutrax
The plural of anecdote is not data.
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8

My first reaction was, "This is the kind of problem that had me putting my head down and crying, when I was in grade school. Then I just ignored it in later years. And that's what I do now-- I live 20 km from the village; if we don't have something on hand we either do without or make a substitute.
That said, one member of the family is stil resolutely non-metric while the other does all the necessary conversions, calculator in hand.

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