/sci/ - Science & Math

[Anonymous No.5609842]

Is there a solution to this: http://youtu.be/cHcjC3sWV4c

[Anonymous No.5609864]

>$49 + $49 = $98 + $1
Gee, op. I wonder what's wrong...

[None !3BananaXFw No.5609868]

You subtract your dollar, because you gained it --> 97 bucks
/thread, stop advertising your shitty videos

[Anonymous No.5609889]

Here's a mind-bender:
Q: How can you tell it's 7pm EST without looking at a clock?
A: Americans start posting their math "puzzles" on teh 4chins.

[Anonymous No.5609897]

>>5609889
>mfw see clock and see that it actually is 7pm

[Anonymous No.5609903]

>>5609889
Q: how can you tell it's not summer without knowing the date?
A: The other boats are on a high, while /sci/ is at an incredible low (and idiots try using spoiler tags on /sci/)

[Anonymous No.5609906]

>>5609868
Some people were being dicks about it and I had to paint them a picture.Also I posted the picture, which should be fine for most people.

[Anonymous No.5609910]

No solution has been posted.

[Anonymous No.5609914]

>>5609889
>>5609889
>being so new you think you messed up your spoiler tags, delete your post, and fuck it up again
thanks for making my day
>the city of you

[Anonymous No.5609933]

>>5609897
>>5609903
>>5609914
wut

[Anonymous No.5609939]

>>5609842
there is no missing dollar, 97 went for the shirt, 1 for the protag, one for the mother, and one for the dad. This entire question is just a test to see how easily you accept a question's -no matter how illogical- premise.

[Anonymous No.5609951]

>>5609939
Well that's logic, but its the arithmetic that counts right? Or is this just retarded?

[Anonymous No.5609959]

You shouldn't re-add your dollar at the end. You're subtracting the 2, getting 49 due to 98/2. The one dollar doesn't go back ontop of the total but rather is taken from it.

[Anonymous No.5609963]

lol, the [$97] variable is irrelevant to the implied problem at the end.

You owe $100. You got back $3. You paid back $2. You now owe $98. There is no missing dollar besides the $1 you pocketed.

This puzzle is a rather clever way of demonstrating the problems that are caused by the way most grade-school math textbooks teach the subject.

[Anonymous No.5609966]

>>5609963
Son of a bitch, I meant "You now owe $99."

[Anonymous No.5609970]

97 + 1 - 49 - 49 = 0

$97, value of the shirt
$1, the dollar you currently possess
$49, debt to mom
$49, debt to dad

Assets minus liabilities. The arithmetic works out.

[Anonymous No.5609976]

>>5609951
>but its the arithmetic that counts right?
you're adding debts to real money. plus they have opposite signs. it doesn't work arithmetically or logically.

[Anonymous No.5609984]

At the end of the transaction, mom and dad lost $49. You earned $1. The store earned $97.

All the money is accounted for, Adding 49 + 49 + 1 doesn't mean anything. It makes as much sense as adding 49 + 1 + 97.

[Anonymous No.5610012]

>>5609842

mom - 50, me +50
dad - 50, me +50
me -97, store +97
me -1, mom +1
me -1, dad +1

mom -50 +1 = -49
dad -50 + 1 = -49
me +50 +50 -97 -1 -1 = 1
store + 97 = 97

-49 -49 = 1 + 97

[Anonymous No.5610018]

>>5609842
Let's see. So you wasted 97 dollars and now you owe 50 to each of your parents, You got 3 dollars left. Now you return 1.50 to your father and 1.50 to your mom. Great, now you owe them 48.50 to each.

I don't see the problem.

[Anonymous No.5610024]

>>5610012
>-98=98

[Anonymous No.5610031]

>>5610024
welcome to accounting?

[Anonymous No.5610044]

This is actually a problem I can assist with!

Pre-payment

Assets:

Shirt: 97
Dollar: 3

100

Liabilities -

Mom - 50
Dad 50

100

Post-payment

Assets:

Shirt 97
Cash 1

Liabilities

Accounts payable - Mom 49
Accounts payable - Dad 49

98

It balances, there is no missing dollar. The reason the second number decreases is the discharge of liabilities and assets.

[Anonymous No.5610056]

The last line is incorrect. It should read like this:

-$98 + $1 = -$97
debts + cash-on-hand = cost of the shirt you still owe

[Anonymous No.5610067]

The last equation is wrong:
1) Formally, it says 49+49=99. Learn to write equations you retard.
2)On the actual question: it doesn't make any sense to add +1$ at the 98$. The 98$ owed already account for the 1$ you kept for yourself, so you are adding 1$ twice. To get the total money, it's just:
98$ owed + 2$ returned = 100
Oh wow who cares.

[Anonymous No.5610079]

Oh and I'm not opening your retarded jewtube video faggot.

[Anonymous No.5610093]

>>5610079
That's fine too. it's all pretty terrible, so..

[Anonymous No.5610660]

>>5610024
absolute value...

[Anonymous No.5610666]

>>5610660
Well i don't see any | | around.

[Anonymous No.5611951]

So is this problem a joke or is there an actual a mathematical solution that fits with the arithmetic or is it just a play on words?

[None !3BananaXFw No.5611957]

>>5611951
hello OP

don't pretend you aren't OP because the problem has been solved about 4 times in the thread

nice try :^)

[Anonymous No.5611969]

>>5611957
Oh shit, I actually thought IDs were still in place.

Anyway, I havn't seen any agreement on a single solution though.

[None !3BananaXFw No.5611978]

>>5611969
The solutions are above. Stop bumping your thread pls, its a slow board

[Anonymous No.5611986]

>>5611969
>Anyway, I havn't seen any agreement on a single solution though.

There cannot be a single solution,
because the problem is nothing but a confusion of words.

There is no problem in it; it just confuses debt with asset, and implies there is a problem when adding pieces of both.

It's not even remotely new -- it's been a comedy bit since the 40s!

[Anonymous No.5611990]

>>5611986
:) I'm satisfied with this.
Thanks for posting people.
Much appreciated.

[Anonymous No.5612060]

$49
$49
That is the person's debt
That takes $2 of the total debt he owes, which is $100.
The £1 he keeps is money which could go to paying off his debt, which would then make one debt be $48.
So then we have,
$48 + $49

The money he has makes his debts get lower, so to add his debts to his money owned obviously won't provide $100, because he has already lowered that value of his debts with the $2 change.

By doing $49 + $49 + $1 he is only finding how much money he is yet to pay back, which is lower than the price of the shirt because he has already payed the debt back slightly. It is $99 instead of $98 because he is adding the $1, which has potential to lower the debt to $97, which should be the true value.

[Anonymous No.5612079]

>>5612060
>>5612078
its already been answered bros

[Anonymous No.5612078]

>>5609842
What the fuck do you expect when you sum things randomly?

[Anonymous No.5612128]

>"Now you owe your mom 49 and your dad 49"

there's the false statement
you owe them 48.50

[Anonymous No.5612163]

>>5612128
lol no that's been thrown out because it doesn't follow the arithmetic.

[None !3BananaXFw No.5612192]

>>5612128
>>5612163

holy fuck OP stop

no one wants to watch your shitty video jesus fucking christ its so obvious now

[Anonymous No.5613514]

>>5612192
lol I swear it wassn't me.
Also, the hell, this isn't about a video.

[None !3BananaXFw No.5613561]

>>5613514
if it wasn't you you wouldn't bump ur shitty thread 12 hrs later

[Anonymous No.5613564]

>>5609842
>Hurr durr I'm trying to critique text books by pointing out a flaw in this or that system.

Assets minus liabilities anon. You pocketed the dollar.

Allow me to quickly balance this for you:
Asset: Liability.
1 Dollar. 49+49
97 dollar shirt

97 + 1 - 49 - 49 = 0

It's balanced.
Go back to preschool op.

[Anonymous No.5613608]

>>5609842
The subtle error is when the $1 that you kept is added to the final equation. Essentially it's a wrong unit, because it's not a dollar to be owed to the parents. Since you kept the dollar it's a dollar that you still owe to the parents. Nevermind, I'm not explaining this shit, but basically it's just faulty reasoning/math about what is owed.