Brandy K.

asked • 07/13/17

Doubling 1 2/3 cup water for cooking

I have a recipe that calls for 1 and 2/3 cup water, but I'm doubling the recipe to make enough food for everyone. Doubleing 1 cup is easy, but I've never been good with fractions, so I look at the measurements conversion chart on my fridge. It says 2/3 cup is equal to 5 oz. Ok, I think to myself, then 10 oz should be equal to whatever 2/3 cup twice would be, right? So I look for 10 oz on the chart to convert it back into cups, problem is the chart only goes to 8 oz. So I figure I'll take the cup equivilant of 8 oz and the cup equivalent of 2 oz (because 8+ 2 is 10) and that will give me my answer. The chart says 8 oz is equal to 1 cup, and 2oz is equal to 1/4 cups, so thats easy enough. 1 1/4 cups. Add the doubled 1 cup from the begining (1+1=2, duh) for a grand total of 3 and 1/4 cups water. Feeling very accomplished I ask my husband to get it for me, and he tells me my math is wrong, and proceeds to tell me how to add fractions, which goes way over my head, and argues that my chart must be wrong and that he can't fathom how I got my answer. I believe him that I must have done something wrong, because he is basically a mathematical genius, but the numbers are all right there on the chart. How can two things be equal but not still be equal once both values are doubled??? With the information from the chart, did I do the math right? It seemed simple enough, I'm not great with fractions but I'm not THAT stupid... I still aced my collage algebra tests. So why did I get 3 1/4 cups rather than 3 1/3 cups (which both my husband and our calculator says should be the correct answer...)?

2 Answers By Expert Tutors

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David W. answered • 07/14/17

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Brandy K.

Thankyou. My husband did realize the chart was estimating, but he failed to mention it to me, assuming I had already known it was an estimated amount. Your explanation has helped a lot. My husband is very book smart, and he is very loving and caring, but he has an ASD that makes him kind of socially stupid sometimes. Long story short, rather than helping me finish dinner the easy way, he thought it would be a good opportunity to try (again) to teach me the proper way to do fractions. I actually did learn a few things though; I figured out that 4/3 is 1 and 1/3 because there is 3/3 (which is 1 whole) inside of 4/3. That will actually help me with fractions next time. I also learned that most people in everyday life dont need to know fractions below 1/4 and in cooking to just use the measuring spoons however many times (rather than trying to convert it so my husband only has to fill a single measuring device once... He can suck it up and do it 8 times if i need that much hahaha). And finally i learned why my husband is so anal about fractions; when he was the head fabrication welder for Braun Northwest, he had to do fractions down to the 64th on the fly in his head constantly everyday. Anyway, thankyou so much for your help :)
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07/14/17

Brandy K.

Also, thankyou so very much for putting your answer in a form that i could understand! My whole life people have just written out complex equations, like they are nothing, to answer my simple questions (and honestly, dyslexia is a b*tch). When i see a string of numbers and symbols it is very difficult for me to read. So thankyou for actually explaining your answer in words. I wish there had been teachers that explained things like that in my school ten years ago. 
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07/14/17

David W.

True story --
 
One Thursday, I walked into the Church Fellowship Hall where a half-dozen (estimated) ladies were putting decorations on tables, streamers around poles, other things,  I looked from item thinking about how much it would cost and how long it would take (I'm a retired project manager) and, after several minutes thought to myself, "This is nice!"
 
Just then, a pastor's wife walked in and stopped beside me.  In less than 5 seconds she said, "This is nice!"  I thought, "She can't know that, she hasn't had time to add it all up."
 
But then, she often gets things done while I'm still planning.
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07/14/17

Brandy K.

I know what you mean. I remember when my husband and I were looking over some nature photography my old mentor gave us, and my husband promtly says how much he liked them, while i was standing there still processing what f-stop was used for this picture or the filter used on that one, or how thebwhite-ballance had effected the contrast of the set of photographs overall. I was busy analyzing and admiring how the photos had been taken while he was just enjoying them aesthetically. :)
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07/14/17

David W.

Cool!   You have some expertise that leaves your husband looking like a novice.
 
Now, that doesn't say that either is right or wrong, better or worse, or more or less valuable, etc.  They are just different.
 
As a project manager, I had teams of engineers, computer experts, secretaries, managers, etc.  It was critically important that every category of stakeholders be represented.  We rarely agreed, but we learned that we must listen and we must attempt to appreciate other perspectives.  We soon learned to ask each other good questions in order to get answers we could understand and to put our ideas into terms that the other person understood (or else they were off my team).
 
An excellent, easy-to-read, book by Christian counselor Dr. Gary Chapman:  The Five Love Languages  [there is lots of information about it on the web].
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07/14/17

Brandy K.

Thankyou, we will check it out. My husband and I communicate with each other better than with anyone else, but we still sometimes have issues with miscommunication. Haha, but who doesnt? We both love to read (our personal library has nearly a thousand titles with books from almost every genre) so I'll find a copy and check it out. :)
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07/14/17

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