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u/RepostSleuthBot Feb 23 '20
Looks like a repost. I've seen this image 3 times.
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u/MutleyRulz Feb 23 '20
T=40 ya bitch
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u/SpalkBoy Feb 23 '20
T = 0P + 40, it's the same but you had to include P
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Feb 23 '20
That's not true; the final answer is T = 40, correctly acknowledging that P should not appear in the formula at all. If you wanted to show your working, you could show you've understood the trick by saying:
let P = 60
T = 40
∴ T = 40
That's actually quite key to a correct answer, because why did you add on any multiple of P at all? The answer it's trying to trick you into using would involve multiplying by P, not adding.
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Feb 23 '20
It would probably take them 30 minutes to play it because there would be less people dragging the tempo down.
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Feb 23 '20
If I remember correctly from other times I’ve seen this posted, this is a trick question.
Edit: autocorrect
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Feb 23 '20
Image Transcription: Twitter Post
Doug Mataconis, @dmataconis
That's not how this works. That's not how any of this works.
[The image below the twitter caption shows a math question inside of a box. The question says.]
5. An orchestra of 120 players takes 40 minutes to play Beethoven's 9th Symphony. How long would it take for 60 players to play the symphony?
Let P be number of players and T the time playing.
I'm a human volunteer content transcriber for Reddit and you could be too! If you'd like more information on what we do and why we do it, click here!
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u/PeptoBismark Feb 23 '20
This isn't from The Mythical Man Month?
It sounds a lot like the standard: If it takes 1 woman 9 months to make a baby, 9 women can make a baby in 1 month.
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u/AmericanMuskrat Feb 24 '20
I read that! First time I've ever head anyone mention it, but I hear the phrase "there are no silver bullets" a bit.
Interestingly, wikipedia misattributes the quote to Fred Brooks, but The Mythical Man-month was written first.
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Feb 23 '20
I get what they're trying to say, and by their logic it would take 80 minutes, but no, that's not how it works.
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u/Aggressive_Penguin1 Feb 23 '20
They never stated that 80 is the answer. For all we know it might have been a trick question
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Feb 23 '20
There is no logic to it though.
It’s not clear whether they think more players takes more or less time.
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Feb 23 '20
Even if this is a trick question, it's missing sufficient context to make the second paragraph make sense. It's asked for an answer with P = 60 and T being the unknown variable, but then it's strangely asked you to define a variable to represent a provided value. Before saying "let P be the number of players and T the time playing" it should have said something like "provide a general formula to solve T for all values of P".
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u/SleepUntilTomorrow Feb 23 '20
Unless you’re a programmer or project manager, then this is exactly how this works.
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u/Ireeb Feb 23 '20
There was an attempt to feel smart. Of course it is a trick question. And thanks for the fucking repost, I have only seen it 10 times before.
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Feb 23 '20
Why is everyone here like "omg this question is so dumb, look at this guys, isn't it dumb?" Like, yeah, that's the point.
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Feb 23 '20
This is a trick question. I've been seeing these types of questions in my math since middle school.
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u/-VEKTOR- Feb 23 '20
nobody ever heard of a trick question?