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Interesting somewhat useful mathematical fact

Percentages are reciprocal. That is to say, 12% of 25 is the same as 25% of 12. Sometimes the information can come in handy when you have to calculate percentages in your head. Like if you need to know what 12% of 25 was, it would be kind of difficult to figure out in your head unless you already know that 25% of 12 is 3, so 12% of 25 is also 3
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JoyfulSilence · 51-55, M
I never realized that. Neat!

(X/100) * Y = (Y/100) * X
Jayciedubb · 56-60, M
@JoyfulSilence isn't it strange? It's like addition and multiplication where the arrangement doesn't matter but it seems like it should because of the % sign. ..but its really basic multiplication, so the answer is the same either way the numumbers are fed into it
ArishMell · 70-79, M
Need relationship!

I'd not known of that previously.

I had to write the arithmetic to see how it works: the numerator p of the percentage as a vulgar fraction (p/100) times the original number N is the same either way round, and the denominator 100 divides their product..
Jayciedubb · 56-60, M
Yes its basic multiplication either way the numbers are arranged the answer is the same. If it required division, it wouldn't work.. 🤔 ..or would it? 20÷5=4. 5÷20=0.25 (4, ¼) 10÷5=2. 5÷10=0.5 (2,½) ..

..it might work with an extra wrinkle or two
Gibbon · 70-79, M
Yeah, the problem is there's some that the brain just doesn't grab quick. 12% of 69 gets awkward when flipping. Grab the calculator
Jayciedubb · 56-60, M
@Gibbon hahaha.. unfortunately, i probably was too, involuntarily, but i cant prove it cuz i was one of the drunk ones. I would wake up in the morning and check my vitals (keys, wallet, sunglasses and pocket money). If there wasn't many quarters (i would keep the quarters for doing laundry) and no folding money, I got suspicious. I never expected there to be any folding money. I never brought more than I was planning on spending.

I'd usually drink with big groups of whatever group I belonged to at the time, soldiers, students or construction workers ...boaters, Clampers on rare occasion. When i knew we would all be meeting up, I'd try to get the first round for a couple reasons. One was to set the pace and the other was because the group always starts off small so the round is cheaper🤑. When my turn came back around, all those one and done politician type drinkers who were just making an appearance would have disbursed, and the rounds were cheap again😉
Gibbon · 70-79, M
@Jayciedubb oh my bad stupid auto correction. That's what happens when the arrogant Google Cloud thinks it knows what you're saying better than you do. I actually said, fortunately, I was not a participant. I don't even know how to address everything you just said.
Jayciedubb · 56-60, M
@Gibbon as long as you don't address it, return to sender, it's all good. It was a nice glance down memory lane for me. Although I was a heavy daily drinker for many years, i never got into any trouble over it. No DUIs, no lost jobs or even missed days. Kept my family in tact. I decided to quit when i was recovering from knee surgery (workers comp). That was too much free time and the drinking got out of control. 4 years later, i decided to dip my toe back into the well but with new rules. No hard liquor and a max limit of 2 beers a day, 6 a week. Those have been the rules since 2012 and I don't go anywhere near those limits.

 
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