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

It is currently 21 Feb 2019, 22:21

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
Events & Promotions in February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • Online GMAT boot camp for FREE

     February 21, 2019

     February 21, 2019

     10:00 PM PST

     11:00 PM PST

    Kick off your 2019 GMAT prep with a free 7-day boot camp that includes free online lessons, webinars, and a full GMAT course access. Limited for the first 99 registrants! Feb. 21st until the 27th.
  • Free GMAT RC Webinar

     February 23, 2019

     February 23, 2019

     07:00 AM PST

     09:00 AM PST

    Learn reading strategies that can help even non-voracious reader to master GMAT RC. Saturday, February 23rd at 7 AM PT

Mrs. Rhonda's first grade class of 25 students is lined up in two rows

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

Hide Tags

 
Senior DS Moderator
User avatar
V
Joined: 27 Oct 2017
Posts: 1207
Location: India
Concentration: International Business, General Management
GPA: 3.64
WE: Business Development (Energy and Utilities)
Premium Member CAT Tests
Mrs. Rhonda's first grade class of 25 students is lined up in two rows  [#permalink]

Show Tags

New post 20 Oct 2018, 09:34
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

93% (02:02) correct 7% (02:29) wrong based on 38 sessions

HideShow timer Statistics

Mrs. Rhonda's first grade class of 25 students is lined up in two rows for a class picture. In the first row, the students are lined up shortest to tallest. This increasing height order continues into the second row. The shortest student in the second row is 42 inches tall while the tallest student in the first row is 38 inches tall. What is the median height of the 25 students in Mrs. Rhonda's class?
1) There is one more student in the first row than in the second row.
2) The mean height of all the students is 41 inches.


GMATbuster's Weekly GMAT Quant Quiz #5 Ques No 8


_________________

Win GMAT CLUB Test- Weekly Quant Quiz Contest
Weekly Quant Quiz Questions- Direct Download
SC: Confusable words

All you need for Quant, GMAT PS Question Directory,GMAT DS Question Directory
Error log/Key Concepts
Combination Concept: Division into groups
Question of the Day (QOTD)
Free GMAT CATS

Manager
Manager
avatar
S
Joined: 02 Apr 2018
Posts: 50
Re: Mrs. Rhonda's first grade class of 25 students is lined up in two rows  [#permalink]

Show Tags

New post 20 Oct 2018, 09:43
answer: A

Statement 1 tells us that there is one more student on the second row than the first
Let x be the number of students on the first row and x + 1 is the number of students on the second
therefore x + (x+1) needs to equal 25
Therefore x = 12
The medium is the 13th student and because there are 12 students on the first row, the 13th student is the one that has a height of 42, therefore sufficient

Statement 2 doesn't say anything about the 13th student. And isn't sufficient
Manager
Manager
avatar
B
Joined: 16 Sep 2011
Posts: 96
GMAT ToolKit User Reviews Badge CAT Tests
Re: Mrs. Rhonda's first grade class of 25 students is lined up in two rows  [#permalink]

Show Tags

New post 20 Oct 2018, 09:45
Mrs. Rhonda's first grade class of 25 students is lined up in two rows for a class picture. In the first row, the students are lined up shortest to tallest. This increasing height order continues into the second row. The shortest student in the second row is 42 inches tall while the tallest student in the first row is 38 inches tall. What is the median height of the 25 students in Mrs. Rhonda's class?
1) There is one more student in the first row than in the second row.
2) The mean height of all the students is 41 inches.

So lets say
Row 1 ...... Short .............. Tall
Row 2. Short.......Tall.

As per given information
Row 1.=> short..................38
Row 2 => 42.....................tall

given we have 25 students , median is the 13th person . so if Row 1 has 13 person , median = 38 or if row 2 has 13 person, median = 42 , but not clear as of now

Option 1 , row 1 has 1 more than row 2, which means 38 is median, clear and sufficient

Option 2. 41 is mean , if 41 is mean ....all other numbers in row 1 will be lower than 38 as in row 2 everything is higher than 42...but it does not tell what is the median
not sufficient


A is the answer
Intern
Intern
avatar
B
Joined: 08 Feb 2018
Posts: 20
Re: Mrs. Rhonda's first grade class of 25 students is lined up in two rows  [#permalink]

Show Tags

New post 20 Oct 2018, 09:46
A.

First statement means the first row has 13 kids and second row has 12. The median is going to be the middle term for 25, which is 13 and also the height of the tallest in the first row. 38 inches.
The second statement is insufficient as we can't estimate the magnitude of difference in heights and thus can't predict which row has how many kids.
Intern
Intern
avatar
B
Joined: 17 Dec 2016
Posts: 19
CAT Tests
Re: Mrs. Rhonda's first grade class of 25 students is lined up in two rows  [#permalink]

Show Tags

New post 20 Oct 2018, 10:12
Since number of student is odd --> Median is the 13th tallest student

Statement 1: Since there is one more student in the first row, 13th highest student is the tallest student in the first row --> median = 38 inches
--> Statement 1 is sufficient

Statement 2: we dont need mean to find the median. The mean height let us know total height of 25 student but can not help us find the median
--> Statement 2 is insufficient

Hence, Choice A is the answer
GMAT Club Bot
Re: Mrs. Rhonda's first grade class of 25 students is lined up in two rows   [#permalink] 20 Oct 2018, 10:12
Display posts from previous: Sort by

Mrs. Rhonda's first grade class of 25 students is lined up in two rows

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.