Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2510:00 AM EST
-11:00 AM EST
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
20 May 2019, 21:20
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
80% (01:34) correct
20%
(01:15)
wrong
based on 225
sessions
History
Date
Time
Result
Not Attempted Yet
FRESH GMAT CLUB TESTS QUESTION
x, x, x, x, 8, 8, 8, 8, 12, 12, 11,y
The twelve numbers shown represent, the ages, in years, of the twelve children in a school bus. What is the median age, in years, of the twelve children in the bus?
(1) x = 10
(2) y = 13
M36-112
Experience GMAT Club Test Questions
Yes, you've landed on a GMAT Club Tests question
Craving more? Unlock our full suite of GMAT Club Tests here
Want to experience more? Get a taste of our tests with our free trial today
Rise to the challenge with GMAT Club Tests. Happy practicing!
15 Nov 2021, 08:28
Kudos
Bookmarks
Bunuel
Official Solution:
\(\{x, x, x, x, 8, 8, 8, 8, 12, 12, 11,y\}\)
The twelve numbers shown represent, the ages, in years, of the twelve children in a school bus. What is the median age, in years, of the twelve children in the bus?
The median of a list with even number of terms is the average of the two middle terms (after the numbers have been arranged in ascending/descending order).
(1) \(x = 10\)
The list in ascending order is \(\{8, 8, 8, 8, 10, 10, 10, 10, 11, 12, 12, y\}\).
Notice that irrespective the value of \(y\), the two middle terms will always be 10 and 10, making the median 10. For example, if \(y < 10\), then the list is {8, 8, 8, 8, \(y\), 10, 10, 10, 10, 11, 12, 12} (the two middle terms are 10 and 10) and if \(y \geq 10\), then the list is {8, 8, 8, 8, 10, 10, 10, 10, \(y\), 11, 12, 12} (the two middle terms are 10 and 10). Sufficient.
(2) \(y = 13\)
The list in ascending order is \(\{x, x, x, x, 8, 8, 8, 8, 11, 12, 12, 13\}\). The median can take more than one value. For example:
If \(x=10\), then the list would be \(\{8, 8, 8, 8, 10, 10, 10, 10, 11, 12, 12, 13\}\), making the median equal to 10.
If \(x=12\), then the list would be \(\{8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 13\}\), making the median equal to 12.
Not sufficient.
Answer: A
General Discussion
20 May 2019, 21:32
Kudos
Bookmarks
Bunuel
Median is the middlemost number when a list is arranged in ascending order, for even number of elements the median is the mean of two middlemost numbers/
Statement 1:
Y 8 8 8 8 Y 10 10 10 10 Y 11 Y 12 Y; Y represent the positions where we can put y (Y age in years so integer)
When Y<8 median is 10
When Y >12 median is 10
When y=10/11 median is still 10
When y= 9, median still 10. So sufficient.
Statement 2.
y=13
x, x, x, x, 8, 8, 8, 8, 11, 12, 12, 13; median= 8.5 for x<=8
But for x=10 we saw that median is 10. So B statement is insufficient. Only A.
