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Among the 9,000 people attending a football game at College
[#permalink]
12 Dec 2015, 08:00
12 Dec 2015, 08:00
2
Expert Reply
2
Bookmarks
00:00
Question Stats:
73% (00:45) correct
26% (00:54) wrong based on 448 sessions
Hide Show timer Statistics
Among the 9,000 people attending a football game at College C, there were x students from College C and y students who were not from College C
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The number of people attending the game who were not students |
9,000 − x − y |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Practice Questions
Question: 5
Page: 151
Difficulty: medium
Question: 5
Page: 151
Difficulty: medium
Re: Among the 9,000 people attending a football game at College
[#permalink]
12 Dec 2015, 08:08
12 Dec 2015, 08:08
3
Expert Reply
Solution
We do have 9000 splits into 3 parts: students from C, students NOT from C , and not students at all.
We can name them as \(x+y+z=9000\)
So \(z= 9000 - x - y\)
So the best answer is \(C\)
We do have 9000 splits into 3 parts: students from C, students NOT from C , and not students at all.
We can name them as \(x+y+z=9000\)
So \(z= 9000 - x - y\)
So the best answer is \(C\)
Re: Among the 9,000 people attending a football game at College
[#permalink]
09 Jun 2018, 05:36
09 Jun 2018, 05:36
3
Expert Reply
Carcass wrote:
Among the 9,000 people attending a football game atCollege C, there were x students from College C and y students who were not from College C
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The number of people attending the game who were not students |
9,000 − x − y |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Practice Questions
Question: 5
Page: 151
Difficulty: medium
Question: 5
Page: 151
Difficulty: medium
Another approach is to use the Double Matrix Method. This technique can be used for most questions featuring a population in which each member has two characteristics associated with it (aka overlapping sets questions).
Here, we have a population of people watching a football game, and the two characteristics are:
- from College C or not from College C
- student or non student
We can set up out diagram as follows:
Since the two columns (student and non-student) must add to 9000, the SUM of the two boxes in the non-student column must = 9000 - (x + y)
= 9000 - x - y
So, we get:
Quantity A: 9000 - x - y
Quantity B: 9000 - x - y
Answer: C
RELATED VIDEO
_________________
Re: Among the 9,000 people attending a football game at College
[#permalink]
09 Jul 2018, 18:33
09 Jul 2018, 18:33
Carcass wrote:
Among the 9,000 people attending a football game atCollege C, there were x students from College C and y students who were not from College C
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The number of people attending the game who were not students |
9,000 − x − y |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Practice Questions
Question: 5
Page: 151
Difficulty: medium
Question: 5
Page: 151
Difficulty: medium
Answer is c
Re: Among the 9,000 people attending a football game at College
[#permalink]
25 Oct 2018, 21:41
25 Oct 2018, 21:41
can B be the answer/
Re: Among the 9,000 people attending a football game at College
[#permalink]
17 Nov 2019, 14:55
17 Nov 2019, 14:55
In a question like this, would it be possible for the number of students not from college C to be 0? (Kind of as a trick question)
Re: Among the 9,000 people attending a football game at College
[#permalink]
19 Nov 2019, 07:19
19 Nov 2019, 07:19
Expert Reply
No. Impossible.
The question then would not make any sense.
Regards
The question then would not make any sense.
Regards
Re: Among the 9,000 people attending a football game at College
[#permalink]
23 Jul 2021, 00:46
23 Jul 2021, 00:46
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