GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 20 Oct 2019, 12:12

Close

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
Your Progress

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.

Close

Request Expert Reply

Confirm Cancel

The median length of the 13 logs in shipment x was 84 inches

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Intern
Intern
avatar
Joined: 28 Aug 2012
Posts: 46
Concentration: Operations, Marketing
GMAT 1: 510 Q36 V25
GPA: 4
WE: Information Technology (Other)
The median length of the 13 logs in shipment x was 84 inches  [#permalink]

Show Tags

New post 01 Apr 2013, 07:43
6
1
12
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

83% (01:53) correct 17% (01:56) wrong based on 163 sessions

HideShow timer Statistics

The median length of the 13 logs in shipment x was 84 inches, and the median length of the 21 logs in shipment y was 85 inches. If the two longest logs in shipment Y were transferred to shipment X, what would be the median length, in inches, of the 15 logs in shipment X after the transfer?

1) The two logs transferred had lengths of 91 and 92 inches, respectively.

2) The longest log that was in shipment x before the transfer had length 90 inches.

+1 if u like the Q :-D
Most Helpful Expert Reply
Veritas Prep GMAT Instructor
User avatar
Joined: 11 Dec 2012
Posts: 312
Re: The median length of the 13 logs in shipment x was 84 inches  [#permalink]

Show Tags

New post 01 Apr 2013, 09:41
5
1
thinktank wrote:
The median length of the 13 logs in shipment x was 84 inches, and the median length of the 21 logs in shipment y was 85 inches. If the two longest logs in shipment Y were transferred to shipment X, what would be the median length, in inches, of the 15 logs in shipment X after the transfer?

1) The two logs transferred had lengths of 91 and 92 inches, respectively.

2) The longest log that was in shipment x before the transfer had length 90 inches.

+1 if u like the Q :-D


Be weary of a question like this because you could think it's solvable if you confuse median with mean. The median is the middle term (or average of two middle terms in an even-numbered set), so adding terms at the end does not mean (pun intended) that we know the new median.

If this question asked about the average, then you could think it would be (13* 84)+91+92 and then divide the whole thing by 15, and this is tempting because the math is tough so it lends itself well to a data sufficiency question. If you identify the word median properly and don't get confused with the concept of mean, this question becomes significantly easier.

Hope this helps!
-Ron
_________________
General Discussion
Manager
Manager
User avatar
Joined: 24 Sep 2012
Posts: 81
Location: United States
Concentration: Entrepreneurship, International Business
GMAT 1: 730 Q50 V39
GPA: 3.2
WE: Education (Education)
Re: The median length of the 13 logs in shipment x was 84 inches  [#permalink]

Show Tags

New post 01 Apr 2013, 08:49
4
The question tells us that the median of the 13 logs in shipment x is 84 inches. This implies that the length of the seventh log, when all logs are arranged in ascending order, is 84.
The question also tells us that the median of the 21 logs in shipment y is 85 inches. This implies that the length of the 12th log, when all logs are arranged in ascending order of length, is 85 inches.
Now, two longest logs are shifted from shipment y to shipment x. We need to find the median length of the 15 logs in shipment x.
1. This tells is the length of the longest two logs transferred. However, to find the median of the fifth log, we need to know the length of the 8th log which must be greater than 84 inches. However, we cannot be sure of its length. Hence, INSUFFICIENT.

2. This tells us that the longest log is shipment x has a length of 90 inches. However, this does not tell us the lengths of the logs longer than 84 inches. Hence, INSUFFICIENT.

Together, the statements still do not tell us anything about the length of the 8th log in shipment X so still insufficient.
Answer:E

thinktank wrote:
The median length of the 13 logs in shipment x was 84 inches, and the median length of the 21 logs in shipment y was 85 inches. If the two longest logs in shipment Y were transferred to shipment X, what would be the median length, in inches, of the 15 logs in shipment X after the transfer?

1) The two logs transferred had lengths of 91 and 92 inches, respectively.

2) The longest log that was in shipment x before the transfer had length 90 inches.

+1 if u like the Q :-D
Director
Director
User avatar
B
Joined: 03 Feb 2013
Posts: 835
Location: India
Concentration: Operations, Strategy
GMAT 1: 760 Q49 V44
GPA: 3.88
WE: Engineering (Computer Software)
Reviews Badge
The median length of the 13 logs in shipment x was 84 inches  [#permalink]

Show Tags

New post 09 Dec 2014, 03:42
2
2
Basically in shipment X, if we put in ascending order, the 7th log is 84
and in Shipment Y, 11th log is 85 inches.

We need to find after the transfer, the length of 8th Log in shipment x.
Statement 1) The two logs transferred had lengths of 91 and 92 inches, respectively.
Now I don't know lengths of logs 8th to 13th. I don't know how to place them and find out the median -> Not Sufficient.


Statement 2) Longest log in Shipment X is 90. We don't know what is the length of logs transferred and length of logs from 8th to 13th. not Sufficient

Combining the two statements.
We just know in ascending order 13th, 14th and 15th with certainty and rest we don't know.

So E)
_________________
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 13316
Re: The median length of the 13 logs in shipment x was 84 inches  [#permalink]

Show Tags

New post 18 Aug 2019, 05:59
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.
_________________
GMAT Club Bot
Re: The median length of the 13 logs in shipment x was 84 inches   [#permalink] 18 Aug 2019, 05:59
Display posts from previous: Sort by

The median length of the 13 logs in shipment x was 84 inches

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne