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.
May 1912:00 PM PDT
-01:00 PM PDT
Scoring 329 on the GRE is not always about using more books, more courses, or a longer study plan. In this episode of GRE Success Talks, Ashutosh shares his GRE preparation strategy, study plan, and test-day experience, explaining how he kept his prep....
May 2008:00 AM PDT
-08:30 AM PDT
What’s in it for you- Live Profile Evaluation Chat Session with Jenifer Turtschanow, CEO, ARINGO. Come with your details prepared and ARINGO will share insights! Pre-MBA Role/Industry, YOE, Exam Score, C/GPA, ECs Post-MBA Role/ Industry & School List.
May 1501:00 PM IST
-11:00 AM IST
Start your journey with a fully customized action plan and work with a dedicated mentor to achieve a 735+ score.- Jun 10
06:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
03 Aug 2023, 01:30
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
64% (01:59) correct
36%
(01:55)
wrong
based on 123
sessions
History
Date
Time
Result
Not Attempted Yet
What percentage of the current fourth graders at Liberation Elementary School dressed in costume for Halloween for the past two years in a row (both this year and last year)?
(1) 60% of the current fourth graders at Liberation Elementary School dressed in costume for Halloween this year.
(2) Of the current fourth graders at Liberation Elementary School who did not dress in costume for Halloween this year, 80% did not dress in costume last year.
(1) 60% of the current fourth graders at Liberation Elementary School dressed in costume for Halloween this year.
(2) Of the current fourth graders at Liberation Elementary School who did not dress in costume for Halloween this year, 80% did not dress in costume last year.
03 Aug 2023, 07:23
Kudos
Bookmarks
Bunuel
We can use a 2*2 matrix to approach this question
| Last Year - Dressed in Costume | Last Year - Not Dressed in Costume | Total | |
| This Year - Dressed in Costume | x | ||
| This Year - Not Dressed in Costume | |||
| Total | t |
Statement 1
(1) 60% of the current fourth graders at Liberation Elementary School dressed in costume for Halloween this year.
| Last Year - Dressed in Costume | Last Year - Not Dressed in Costume | Total | |
| This Year - Dressed in Costume | x | 0.6t | |
| This Year - Not Dressed in Costume | 0.4t | ||
| Total | t |
We don't have sufficient information to answer the question. Hence, we can eliminate A and D.
Statement 2
(2) Of the current fourth graders at Liberation Elementary School who did not dress in costume for Halloween this year, 80% did not dress in costume last year.
| Last Year - Dressed in Costume | Last Year - Not Dressed in Costume | Total | |
| This Year - Dressed in Costume | x | t - m | |
| This Year - Not Dressed in Costume | 0.2m | 0.8m | m |
| Total | t |
We don't have sufficient information to answer the question. Hence, we can eliminate B.
Combined
| Last Year - Dressed in Costume | Last Year - Not Dressed in Costume | Total | |
| This Year - Dressed in Costume | x | 0.6t | |
| This Year - Not Dressed in Costume | 0.08t | 0.32t | 0.4t |
| Total | t |
However, the information is still not sufficient to find the value of \(x\) or \(\frac{x}{t}\).
The statements combined do not help.
Option E
03 Aug 2023, 17:07
Kudos
Bookmarks
1) what about LY? INSUFF
2) "Of the current fourth graders at Liberation Elementary School who did not dress in costume for Halloween this year..." How many? INSUFF
1 & 2)
CY = Current Year
---------------------- | CY | LY
dress Halloween | 60% | 100%-z
not dress Halloween | 40% | z= 80%*40% + 60%*y%=32%+0.6y%
We want 60%*(100%-z). But z is undefined, because y is undefined
ANSWER: E
2) "Of the current fourth graders at Liberation Elementary School who did not dress in costume for Halloween this year..." How many? INSUFF
1 & 2)
CY = Current Year
---------------------- | CY | LY
dress Halloween | 60% | 100%-z
not dress Halloween | 40% | z= 80%*40% + 60%*y%=32%+0.6y%
We want 60%*(100%-z). But z is undefined, because y is undefined
ANSWER: E
