Straight Dope Message Board > Main Answer this quickly (and hopefully correctly)
 Register FAQ Calendar Mark Forums Read

#1
06-13-2012, 01:21 PM
 Gangster Octopus Guest Join Date: Dec 2002
Answer this quickly (and hopefully correctly)

A hot dog and a soda cost \$1.10. The hot dog is a dollar more than the soda, how much is the soda?
#2
06-13-2012, 01:23 PM
 Taomist Guest Join Date: Jul 2009
A nickel.

Wait...what are the taxes?
#3
06-13-2012, 01:27 PM
 Sicks Ate Guest Join Date: Feb 2011
.5
#4
06-13-2012, 01:41 PM
 Lancia Member Join Date: Jun 2011 Location: Denial Posts: 922
Quote:
 Originally Posted by Sicks Ate .5
As in, 50 cents??

Man, you guys got me totally confused.
#5
06-13-2012, 01:42 PM
 tdn Guest Join Date: Feb 2000
5 copper disks.
#6
06-13-2012, 01:44 PM
 Sicks Ate Guest Join Date: Feb 2011
Quote:
 Originally Posted by Lancia As in, 50 cents?? Man, you guys got me totally confused.
Uh....yeah typo, I was going for .05
#7
06-13-2012, 08:34 PM
 Senegoid Guest Join Date: Sep 2011
Quote:
 Originally Posted by Sicks Ate .5
Verizon math!
#8
06-13-2012, 08:37 PM
 billfish678 Guest Join Date: Jun 2006
The funny thing about this question is this. You can easily jump to an answer that you think is correct. The important part is that you can then very easily CHECK what you think the answer is once you THINK you've got it. That a good fraction of smart people never bothered to do the second part doesn't surprise me in the least. Because they are so used to being right it often doesn't occur to them to consider they might not be.

Last edited by billfish678; 06-13-2012 at 08:39 PM.
#9
06-13-2012, 01:32 PM
 olivesmarch4th Member Join Date: Jan 2007 Location: Exit 9 Posts: 10,678
Ten cents.

ETA: Math fail. I was never good at this stuff. 5 cents?

Last edited by olivesmarch4th; 06-13-2012 at 01:33 PM.
#10
06-13-2012, 01:34 PM
 runner pat Charter Member Join Date: Nov 2000 Location: Riding my handcycle Posts: 11,280
2 dollars. There's no way a nickel's worth of soda will be enough.
#11
06-13-2012, 01:33 PM
 TriPolar Member Join Date: Oct 2007 Location: rhode island Posts: 19,771
This must have been in the old days where a soda cost a nickel. But then the hot dog would only cost a nickel then too. Everything cost a nickel in the old days, it was the only unit of currency. So the question has no reality based answer, just a theoretical one.

Last edited by TriPolar; 06-13-2012 at 01:33 PM.
#12
06-13-2012, 11:20 PM
 Autolycus Member Join Date: Nov 2002 Location: Ainran Posts: 11,449
Quote:
 Originally Posted by TriPolar This must have been in the old days where a soda cost a nickel. But then the hot dog would only cost a nickel then too. Everything cost a nickel in the old days, it was the only unit of currency. So the question has no reality based answer, just a theoretical one.
Yeah, everything did cost a nickel back then. Even to take the ferry cost a nickel, and in those days, nickels had pictures of bumblebees on 'em. Give me five bees for a quarter, you'd say.
#13
06-28-2012, 08:04 PM
 Dr. Strangelove Guest Join Date: Dec 2010
Quote:
 Originally Posted by Autolycus Yeah, everything did cost a nickel back then. Even to take the ferry cost a nickel, and in those days, nickels had pictures of bumblebees on 'em. Give me five bees for a quarter, you'd say.
If a belt and an onion cost \$1.10, and the belt costs a dollar more than the onion, how much does the onion cost?
#14
06-13-2012, 01:36 PM
 Taomist Guest Join Date: Jul 2009
Wait...is this in New York and the soda is over 16 oz? 'cause that's illegal territory, bud!
#15
06-13-2012, 01:38 PM
 Lancia Member Join Date: Jun 2011 Location: Denial Posts: 922
All right, help me out here... how does 1.10 - 1.00 = .05? Is there some new rule of basic arithmetic that's been discovered since I was in gradeschool?
#16
06-13-2012, 01:41 PM
 Leaffan Guest Join Date: Aug 2005
Quote:
 Originally Posted by Lancia All right, help me out here... how does 1.10 - 1.00 = .05? Is there some new rule of basic arithmetic that's been discovered since I was in gradeschool?
I must be dumb too, because I instantly said "ten cents."

Last edited by Leaffan; 06-13-2012 at 01:41 PM.
#17
06-20-2012, 12:54 PM
 Lukeinva Guest Join Date: Mar 2009
Quote:
 Originally Posted by Leaffan I must be dumb too, because I instantly said "ten cents."
If the soda was 10c the hot dog would be 90c more than the soda.
#18
06-20-2012, 02:07 PM
 Leaffan Guest Join Date: Aug 2005
Quote:
 Originally Posted by Lukeinva If the soda was 10c the hot dog would be 90c more than the soda.
You don't say?

I'm pretty sure I figured out where my math went wrong after thinking about the question for a few seconds. The whole idea was NOT to think though, but to answer quickly. Which I did. And was obviously trapped like a lot of other people who answered quickly.
#19
06-20-2012, 02:10 PM
 Irishman Guest Join Date: Dec 1999
This isn't a math problem, it's an ambiguity of English problem.

If I pay 10 cents for a soda (and where can you get a deal like that?), then I pay a dollar more for a hot dog, I pay \$1.10 for a hot dog and a soda, and the hot dog cost \$1.

It's all in the phrase "a dollar more than".
#20
06-23-2012, 08:57 AM
 Alan3354 Guest Join Date: Jun 2012
Quote:
 Originally Posted by leaffan i must be dumb too, because i instantly said "ten cents."
\$0.05 + \$1.05 = \$1.10
#21
06-13-2012, 01:45 PM
 tdn Guest Join Date: Feb 2000
Quote:
 Originally Posted by Lancia All right, help me out here... how does 1.10 - 1.00 = .05? Is there some new rule of basic arithmetic that's been discovered since I was in gradeschool?
If the hot dog costs a dollar more than the soda, and if the soda is 5 cents, then

.05 + 1.00 = 1.05.

The cost of the soda and hot dog together:

.05 + 1.05 = 1.10.
#22
06-13-2012, 01:52 PM
 Lancia Member Join Date: Jun 2011 Location: Denial Posts: 922
Quote:
 Originally Posted by tdn If the hot dog costs a dollar more than the soda, and if the soda is 5 cents, then .05 + 1.00 = 1.05. The cost of the soda and hot dog together: .05 + 1.05 = 1.10.

Now I get it.
#23
06-13-2012, 01:54 PM
 tdn Guest Join Date: Feb 2000
Quote:
 Originally Posted by Lancia Now I get it.
Yeah, but where did the other 2 dollars go?
#24
06-13-2012, 02:07 PM
 TriPolar Member Join Date: Oct 2007 Location: rhode island Posts: 19,771
Quote:
 Originally Posted by tdn Yeah, but where did the other 2 dollars go?
The bellhop kept it.
#25
06-13-2012, 02:09 PM
 Taomist Guest Join Date: Jul 2009
Quote:
 Originally Posted by tdn yeah, but where did the other 2 dollars go?
i want my two dollars!!!
#26
06-13-2012, 01:40 PM
 Cat Whisperer Charter Member Join Date: Oct 2000 Location: Calgary, AB. Posts: 43,578
The soda is five cents, the hot dog is 1.05 dollars - therefore, the hot dog is one dollar more than the soda if the soda is five cents.

Caveat: I"m no math genius. If I'm wrong, well, it won't be the first time.
#27
06-13-2012, 01:44 PM
 Leaffan Guest Join Date: Aug 2005
nm

Last edited by Leaffan; 06-13-2012 at 01:45 PM.
#28
06-13-2012, 01:47 PM
 Lancia Member Join Date: Jun 2011 Location: Denial Posts: 922
Quote:
 Originally Posted by Cat Whisperer The soda is five cents, the hot dog is 1.05 dollars - therefore, the hot dog is one dollar more than the soda if the soda is five cents. Caveat: I"m no math genius. If I'm wrong, well, it won't be the first time.
Does not compute. If the soda is 5 cents (.05) and the hot dog costs one dollar more (one dollar being an even 1.00), then the total should be 1.05, right? 1.00 + .05 = 1.05.
#29
06-13-2012, 01:50 PM
 tdn Guest Join Date: Feb 2000
Quote:
 Originally Posted by Lancia Does not compute. If the soda is 5 cents (.05) and the hot dog costs one dollar more (one dollar being an even 1.00), then the total should be 1.05, right? 1.00 + .05 = 1.05.
No, the hot dog is a dollar more, making it 1.05. That's the hot dog alone. What's the hot dog PLUS the soda?
#30
06-13-2012, 01:44 PM
 Drunky Smurf Member Join Date: Dec 2006 Location: Smurf Village. Posts: 4,419
.5 cents.

SPOILER:
#31
06-13-2012, 01:47 PM
 tdn Guest Join Date: Feb 2000
Quote:
 Originally Posted by Drunky Smurf .5 cents.
A hapenny?
#32
06-23-2012, 10:32 AM
 Ethilrist Guest Join Date: Nov 2000
Quote:
 Originally Posted by tdn A hapenny?
Tuppence a bag.
#33
06-13-2012, 01:45 PM
 Gangster Octopus Guest Join Date: Dec 2002
If it makes folks feel any better, half of students at Harvard, Princeton and MIT got this question wrong when asked. Whether you get it right or not is not really correlated with your intelligence.
#34
06-13-2012, 01:46 PM
 Sicks Ate Guest Join Date: Feb 2011
Quote:
 Originally Posted by Gangster Octopus If it makes folks feel any better, half of students at Harvard, Princeton and MIT got this question wrong when asked. Whether you get it right or not is not really correlated with your intelligence.
I knew MIT wasn't worth my time.
#35
06-23-2012, 10:24 AM
 SpyOne Guest Join Date: Mar 2010
Quote:
 Originally Posted by Gangster Octopus If it makes folks feel any better, half of students at Harvard, Princeton and MIT got this question wrong when asked. Whether you get it right or not is not really correlated with your intelligence.
OR attending Harvard, Princeton, and MIT is not really correlated with intelligence.

Just sayin', not enough data here to support your conclusion.

Oh, and possibly both: maybe getting the question right is unrelated to intelligence, AND counter to stereotype those schools have as many idiots as geniuses in attendance.
#36
06-28-2012, 10:10 PM
 InternetLegend Member Join Date: Aug 2000 Location: New Mexico Posts: 3,099
Quote:
 Originally Posted by Gangster Octopus If it makes folks feel any better, half of students at Harvard, Princeton and MIT got this question wrong when asked. Whether you get it right or not is not really correlated with your intelligence.
Apparently not. My Brilliant Daughter got it wrong and I got it right the first time.
#37
06-13-2012, 01:47 PM
 Gagundathar Guest Join Date: Jan 2010
It is all in the wording.
Obviously if you choose \$1.00 for the hot dog and \$0.10 for the drink, the difference is \$0.90.
So, to fulfill the requirements of this little gem, you have to say \$1.05 for the hot dog and \$0.05 for the drink. That makes the difference equal to \$1.00.

Shall I draw a diagram? ;-)
#38
06-13-2012, 02:03 PM
 Dallas Jones Guest Join Date: Apr 2008
What if I ordered water with my hot dog and the water was free? But the cup was .05 and then I spilled the water on my girfriend and asked for another cup, which they gave to me free?

How much is this girl going to cost me, eventually?
#39
06-13-2012, 02:05 PM
 Shagnasty Charter Member Join Date: May 2000 Posts: 20,635
Quote:
 Originally Posted by Dallas Jones What if I ordered water with my hot dog and the water was free? But the cup was .05 and then I spilled the water on my girfriend and asked for another cup, which they gave to me free? How much is this girl going to cost me, eventually?
Everything you have and then some eventually.
#40
06-13-2012, 02:06 PM
 tdn Guest Join Date: Feb 2000
Quote:
 Originally Posted by Dallas Jones What if I ordered water with my hot dog and the water was free? But the cup was .05 and then I spilled the water on my girfriend and asked for another cup, which they gave to me free? How much is this girl going to cost me, eventually?
#41
06-29-2012, 03:13 PM
 doorhinge Guest Join Date: May 2012
Quote:
 Originally Posted by Dallas Jones What if I ordered water with my hot dog and the water was free? But the cup was .05 and then I spilled the water on my girfriend and asked for another cup, which they gave to me free? How much is this girl going to cost me, eventually?
If you marry her, pssst her off, and she divorces you then the answer would be "exactly half your stuff".
#42
06-13-2012, 11:44 PM
 flatlined Member Join Date: Jan 2011 Location: high desert Posts: 2,647
42

Because that is the answer to any math question. It gives me time to think about a better answer.

Last edited by flatlined; 06-13-2012 at 11:45 PM.
#43
06-14-2012, 08:54 AM
 Cat Whisperer Charter Member Join Date: Oct 2000 Location: Calgary, AB. Posts: 43,578
Quote:
 Originally Posted by flatlined 42 Because that is the answer to any math question. It gives me time to think about a better answer.
Hey! You totally copied that off of my paper! (I gave that answer in the other math thread yesterday, which I am too lazy to look up.)

Actually, us copying off each other probably isn't the best idea for our math grades - how about we go to the cafeteria and eat french fries and gossip instead?
#44
06-13-2012, 11:54 PM
 Enkel Guest Join Date: May 2012
Quote:
 Originally Posted by Gangster Octopus A hot dog and a soda cost \$1.10. The hot dog is a dollar more than the soda, how much is the soda?
I'm in the process of editing right now, so this is what my mind did:

A hot dog and a soda cost \$1.10. The hot dog is a dollar, more than the soda. How much is the soda?

#45
06-14-2012, 03:44 AM
 sandra_nz Guest Join Date: Jun 2005
Quote:
 Originally Posted by Gangster Octopus A hot dog and a soda cost \$1.10. The hot dog is a dollar more than the soda, how much is the soda?
#46
06-14-2012, 05:14 AM
 Alka Seltzer Guest Join Date: May 2009
I got it wrong as well. I take it you got it from here Gangster Octopus?

The conclusion of that article is a bit depressing. "People who were aware of their own biases were not better able to overcome them.”
#47
06-24-2012, 11:15 PM
 denquixote Guest Join Date: Jun 2007
Quote:
 Originally Posted by Alka Seltzer I got it wrong as well. I take it you got it from here Gangster Octopus? The conclusion of that article is a bit depressing. "People who were aware of their own biases were not better able to overcome them.”
Thanks for the cite. I got this one wrong too about 50 years ago, but have never forgotten it. I'm glad to find out why.
#48
06-25-2012, 02:48 AM
 BigT Guest Join Date: Aug 2008
Quote:
 Originally Posted by Alka Seltzer I got it wrong as well. I take it you got it from here Gangster Octopus? The conclusion of that article is a bit depressing. "People who were aware of their own biases were not better able to overcome them.”
I'm not entirely sure they can actually conclude this. How are they asking people about their biases? Knowing that a textbook says I will do X doesn't make me less likely to do X, as the information hasn't been thoroughly integrated into my normal thought processes. It's just a bit of trivia.

I'm also curious how they present this test in such a way that smart people wouldn't also be looking for a trick, and thus be on their guard. The real problem is this showing up in real life, when most people are not inherently aware of their own biases. It takes a lot of training to not trust even your own thinking, and, even then, are the rewards worth it? Those shortcuts exist for a reason--they help us make quick decisions when time matters.
#49
06-14-2012, 06:25 AM
 Musicat Charter Member Join Date: Oct 1999 Location: Sturgeon Bay, WI USA Posts: 14,732
High school algebra. I'll take it slow for the math-impaired.

Let S represent the cost of a soda, and H, the cost of a hot dog.

The premise is

S + H = 1.10

and

H = S + 1.00

Substituting H in the first equation,

S + (S+1.00) = 1.10

Reduces to

S + S + 1.00 = 1.10

2S + 1.00 = 1.10

2S = 1.10 - 1.00

2S = .10

S = .10/2

S = .05, so a soda costs a nickel. For you Aussies, that's a 5-cent piece.*

-----------------------------

* I was in Sydney long ago, and the bank teller didn't understand me when I asked for nickels in change so I could make a phone call. Apparently "nickel" isn't globally universal for "5-cent piece," and it wasn't obvious to this Yank. Stupid foreigners.
#50
06-14-2012, 07:08 AM
 GuanoLad Charter Member Join Date: Sep 1999 Location: Where the wild roses grow Posts: 18,133
Quote:
 Originally Posted by Musicat * I was in Sydney long ago, and the bank teller didn't understand me when I asked for nickels in change so I could make a phone call. Apparently "nickel" isn't globally universal for "5-cent piece," and it wasn't obvious to this Yank. Stupid foreigners.
You would've been totally out of luck if you'd wanted it in quarters.

 Bookmarks

 Thread Tools Display Modes Hybrid Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is Off HTML code is Off
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Main     About This Message Board     Comments on Cecil's Columns/Staff Reports     Straight Dope Chicago     General Questions     Great Debates     Elections     Cafe Society     The Game Room     In My Humble Opinion (IMHO)     Mundane Pointless Stuff I Must Share (MPSIMS)     Marketplace     The BBQ Pit Side Conversations     The Barn House

All times are GMT -5. The time now is 12:52 AM.