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[wingz.]

TYPE OF QUESTION: Math - word problem
YOUR QUESTION: Lila and Sheela were given some beads. While making necklaces, if Lila uses four times as many beads as Sheela, Sheela will still have 932 beads when Lila has used all her beads. If Lila uses half as many beads as Sheela, Sheela will still have 221 beads when Lila has used all her beads.
(a) How many more beads did Sheela have?
(b) Altogether how many beads have they been given?

(This isn't technically homework - I'm revising test papers from previous years. This was in Singapore's PSLE, meaning it's for twelve-year-olds, and yet I can't solve it. D:)

okay so I dont know if it was a typo or something but I not only googled this
problem and tried 5 million ways to do it myself but I asked a TON of people to

for some background, I am a college student intending to be a chemical engineering
major. right now I live in engineering specific housing. I have not only asked everyone
I know in my grade who is part of any math or science oriented field, but I also asked
almost all the upper classman I know as well. everyone says something is wrong with
this problem whether it be the wording or something else beacuse if a bunch of
engineering students (mainly from the chemical or mechanical choices) can't solve this
problem then either we shouldn't be accepted into our major or something with the
problem is wrong otl. I like to think my engineer parents do in fact understand basic
12 year old math as well not to mention I asked a friend in astrophysics which is a crap
ton of math in and of itself (hell I even asked my 12 year old brother if he saw something
we all didnt when I was doing my rounds) so I guess is there a typo or something? I would
be happy to help

either way best of luck with future problems

on this note you can sign me up to help with math (everything up to college calc + physics)
and science (im best w/ chemistry and worst w/ biology) if you wish
I can also do history (Cultures of the Ancient Mediterranean minor specifically if interested)

[Piefan]

@wingz
Thanks. ^^ I found the problem in an old book, but it wasn't government-approved, so it might have been wrong? I s2g, if it's like Cheryl's birthday, I will murder something. c:

[Naala]

@wingz
Thanks. ^^ I found the problem in an old book, but it wasn't government-approved, so it might have been wrong? I s2g, if it's like Cheryl's birthday, I will murder something. c:

I also tried it once and thought that the question is either really complicated or wrong.
If Lila uses half as many beads as Sheela and Sheela still has 221, it would mean that Lila had 221 and Sheela had 442, I would say, but in the context that doesn't make sense.
And if Lila uses four times as many beads as Sheela, how can Sheela still have some left when Lila is finished? Maybe if the names got swapped, but then the second senario still has too less beads. It might work out if Lila works faster than Sheela or uses more beads for one necklace or something, but the text doesn't say anything about that.

[Waki]

Up

[Rabid_Jaguar]

TYPE OF QUESTION: Math
YOUR QUESTION: The sum of a number and its reciprocal is 2 and 1/30 (two and one-thirtieth). Find the number.

I just have absolutely no clue how to do it. . .I can't seem to find anything about it in last year's notes, and the problem isn't at all familiar to me.

[wingz.]

TYPE OF QUESTION: Math
YOUR QUESTION: The sum of a number and its reciprocal is 2 and 1/30 (two and one-thirtieth). Find the number.

I just have absolutely no clue how to do it. . .I can't seem to find anything about it in last year's notes, and the problem isn't at all familiar to me.

so first you want to get your equations set up
according to the problem it says "the sum of a number and its reciprocal"

I used x as my variable, and set it up as x + 1/x = 2 1/30 or 61/30

then you want to get everything on one side so:
x² - 61/30 x + 1 = 0

what you can do next is multiply everything by 30 and you get:
30 x² - 61 x + 30 = 0

after that you just foil!:
(5x - 6)(6x - 5) = 0

so your answers are 6/5 and 5/6

I hope that helped!!! <333

[Rabid_Jaguar]

Thanks you so much, wingz, that helped me a lot! c:

[wingz.]

Thanks you so much, wingz, that helped me a lot! c:

not a problem at all!!

[Waki]

Awesome helping guys! Your really making this thread actually work y'all

[Rabid_Jaguar]

TYPE OF QUESTION:Oh man more math (sorry for all the math, guys, I just can't remember all the stuff I learned last year.)
YOUR QUESTION: Two different quadratic functions of the form y=9x^2 - kx + 4 each touch the x-axis. Find the two values of k.

Mostly what confuses me about this question is that it seems to be saying that there are only two possible values of k. Can't there be more? I'm also not entirely sure how to go about finding k without being given any other information to work with.