Last visit was: 21 Jul 2024, 22:23 It is currently 21 Jul 2024, 22:23
Toolkit
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

# The range for a list of measurements equals the greatest measurement

SORT BY:
Tags:
Show Tags
Hide Tags
Intern
Joined: 19 Dec 2015
Posts: 23
Own Kudos [?]: 847 [51]
Given Kudos: 11
Intern
Joined: 13 Apr 2016
Posts: 47
Own Kudos [?]: 114 [10]
Given Kudos: 7
Location: India
GMAT 1: 640 Q50 V27
GPA: 3
WE:Operations (Hospitality and Tourism)
General Discussion
Intern
Joined: 27 Jul 2018
Posts: 1
Own Kudos [?]: 4 [4]
Given Kudos: 3
Manager
Joined: 11 May 2018
Posts: 124
Own Kudos [?]: 84 [3]
Given Kudos: 287
Re: The range for a list of measurements equals the greatest measurement [#permalink]
2
Kudos
1
Bookmarks
Quote:
The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, X and Y, combined consist of 30 measurements with a range of 25. What is the range for the measurements in list X?

1) The range for the 12 measurements in list Y is 20.

2) List X consists of 18 measurements.

Here There are 30 measurements in x and y.
Range of 30 measurements is 25.
Range of x=?
First of all we need to know the elements that are present in x.

Statement 1:
From 1 we got to know that y has 12 measurements and x has 18.
Now Y has range 20:
we don't know what are the elements that make the range 25 overall and we don't even know the elements in x to find the range of x.

Statement 2:
Same problem as A in statement 2.we don't know the elements.

From 1+2.
we don't know any extra information.
So, the Answer is E
Intern
Joined: 18 Dec 2018
Posts: 34
Own Kudos [?]: 10 [0]
Given Kudos: 0
Re: The range for a list of measurements equals the greatest measurement [#permalink]
Lets say, the least number from the 2 lists is x. Then the biggest number from 2 lists will be (x + 25).
Statement 1: We cannot find the biggest and the smallest measurement in X from the given information. So, we cannot find the range of X. Hence, Insufficient.
Statement 2: No of measurements in list X doesn’t alone provide us with the range of X. Hence, Insufficient.
Statement 1 & 2 together: Information given in both the statement doesn’t help us in finding the range of X unless we are given that the smallest and the largest number of both the lists lie in X. Hence, Insufficient.
Intern
Joined: 12 Jan 2019
Posts: 35
Own Kudos [?]: 17 [0]
Given Kudos: 0
Re: The range for a list of measurements equals the greatest measurement [#permalink]
Let’s say, the least number from the 2 lists is x. Then the biggest number from 2 lists will be (x + 25).
Statement 1: We cannot find the biggest and the smallest measurement in X from the given information. So, we cannot find the range of X. Hence, Insufficient.
Statement 2: No of measurements in list X doesn’t alone provide us with the range of X. Hence, Insufficient.
Statement 1 & 2 together: Information given in both the statement doesn’t help us in finding the range of X unless we are given that the smallest and the largest number of both the lists lie in X. Hence, Insufficient.
Intern
Joined: 15 Nov 2017
Posts: 44
Own Kudos [?]: 13 [0]
Given Kudos: 182
The range for a list of measurements equals the greatest measurement [#permalink]
Hi Sallyzodiac,

I feel like I am going crazy trying to solve this easy problem but am getting stuck. Could someone provide a detailed step by step method for solving this? Thank you so much!

Sallyzodiac wrote:
The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, $$X$$ and $$Y$$, combined consist of 30 measurements with a range of 25. What is the range for the measurements in list $$X$$?

1) The range for the 12 measurements in list $$Y$$ is 20.

2) List $$X$$ consists of 18 measurements.
Manager
Joined: 31 Jul 2017
Posts: 167
Own Kudos [?]: 334 [0]
Given Kudos: 347
Location: Tajikistan
Re: The range for a list of measurements equals the greatest measurement [#permalink]
Dear Bunuel,

Could you please shed some light here
VP
Joined: 29 Oct 2015
Posts: 1121
Own Kudos [?]: 465 [0]
Given Kudos: 672
GMAT 1: 570 Q42 V28
Re: The range for a list of measurements equals the greatest measurement [#permalink]
Sallyzodiac wrote:
The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, $$X$$ and $$Y$$, combined consist of 30 measurements with a range of 25. What is the range for the measurements in list $$X$$?

1) The range for the 12 measurements in list $$Y$$ is 20.

2) List $$X$$ consists of 18 measurements.

To get the range of the list X , we need the maximum value and the minimum value in the list.

From statement 1 , we know the range of 12 measurements in list Y . So , if the first measurement is 100 then the last measurement is 120. But we dont know anything about the maximum or the minimum value in the list Y.

From statement 2 also , we don't know anything about the maximum or the minimum value in the list X.

Taking both together , we still don't know anything about the maximum or the minimum value of the list X.

Option E is the answer.

PLease give me KUDO s if you liked my answer.
Director
Joined: 21 Jun 2017
Posts: 632
Own Kudos [?]: 540 [1]
Given Kudos: 4092
Location: India
Concentration: Finance, Economics
GMAT 1: 660 Q49 V31
GMAT 2: 620 Q47 V30
GMAT 3: 650 Q48 V31
GPA: 3.1
WE:Corporate Finance (Non-Profit and Government)
Re: The range for a list of measurements equals the greatest measurement [#permalink]
1
Kudos
Dear Bunuel ,

Please tag this question --- GMATPREP EP6

Best !!
Math Expert
Joined: 02 Sep 2009
Posts: 94441
Own Kudos [?]: 642848 [0]
Given Kudos: 86716
Re: The range for a list of measurements equals the greatest measurement [#permalink]
ShankSouljaBoi wrote:
Dear Bunuel ,

Please tag this question --- GMATPREP EP6

Best !!

________________
Done. Thank you!
Intern
Joined: 25 Jun 2018
Posts: 39
Own Kudos [?]: 10 [0]
Given Kudos: 46
Re: The range for a list of measurements equals the greatest measurement [#permalink]
say, max and min of X:
Xmin, Xmax

say, max and min of Y:
Ymin, Ymax

Question gives, Ymax - Xmin = 25.
Question is asking, Xmax - Xmin = ?

(1) The range for the 12 measurements in list Y is 20.
First of all, this does not say that the number of measurements of Y is 12. Y can have 15 measurements, but range of 12 of them can be 20.
Even if you suppose that the number of measurements of Y is 12, this gives you:
Ymax - Ymin = 20
NOT SUFF.

(2) List X consists of 18 measurements.
does not add much to find out Xmax, Xmin.
NOT SUFF.

(1) + (2)
Now we are sure that the number of elements of Y is 12, and that of X is 18.
we can now say Ymax - Ymin = 20.
However, not possible to find out Xmax - Xmin.
For example,
Keep in mind that Ymax - Xmin = 25.
- Ymax = 30, Ymin=10, Xmin=5. We dont know Xmax (can be 10 or 15 or something).
NOT SUFF.
Non-Human User
Joined: 09 Sep 2013
Posts: 34042
Own Kudos [?]: 853 [0]
Given Kudos: 0
Re: The range for a list of measurements equals the greatest measurement [#permalink]
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Re: The range for a list of measurements equals the greatest measurement [#permalink]
Moderator:
Math Expert
94441 posts