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.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Quant Quizzes are back with a Bang and with lots of Prizes. The first Quiz will be on 8th Dec, 6PM PST (7:30AM IST). The Quiz will be Live for 12 hrs. Solution can be posted anytime between 6PM-6AM PST. Please click the link for all of the details.
Join IIMU Director to gain an understanding of DEM program, its curriculum & about the career prospects through a Q&A chat session. Dec 11th at 8 PM IST and 6:30 PST
Enter The Economist GMAT Tutor’s Brightest Minds competition – it’s completely free! All you have to do is take our online GMAT simulation test and put your mind to the test. Are you ready? This competition closes on December 13th.
Attend a Veritas Prep GMAT Class for Free. With free trial classes you can work with a 99th percentile expert free of charge. Learn valuable strategies and find your new favorite instructor; click for a list of upcoming dates and teachers.
Does GMAT RC seem like an uphill battle? e-GMAT is conducting a free webinar to help you learn reading strategies that can enable you to solve 700+ level RC questions with at least 90% accuracy in less than 10 days.
At the beginning of the year, the Finance Committee and the Planning C
[#permalink]
Show Tags
25 Oct 2015, 09:15
2
21
00:00
A
B
C
D
E
Difficulty:
45% (medium)
Question Stats:
67% (01:43) correct 33% (02:02) wrong based on 1425 sessions
HideShow timer Statistics
At the beginning of the year, the Finance Committee and the Planning Committee of a certain company each had n members, and no one was a member of both committees. At the end of the year, 5 members left the Finance Committee and 3 members left the Planning Committee. How many members did the Finance Committee have at the beginning of the year?
(1) The ratio of the total number of members who left at the end of the year to the total number of members at the beginning of the year was 1:6. (2) At the end of the year, 21 members remained on the Planning Committee.
At the beginning of the year, the Finance Committee and the Planning C
[#permalink]
Show Tags
25 Oct 2015, 10:43
7
1
Bunuel wrote:
At the beginning of the year, the Finance Committee and the Planning Committee of a certain company each had n members, and no one was a member of both committees. At the end of the year, 5 members left the Finance Committee and 3 members left the Planning Committee. How many members did the Finance Committee have at the beginning of the year?
(1) The ratio of the total number of members who left at the end of the year to the total number of members at the beginning of the year was 1:6. (2) At the end of the year, 21 members remained on the Planning Committee.
Kudos for a correct solution.
Will go with D
Given: Planning Committee (P) has 'n' members. Finance Committee (F) has 'n' members. Total members = n = n = 2n Total members left (L) = 5 + 3 = 8
Find: n = ?
Statement 1: Given that L/2n =1/6 . This implies 8/2n = k/6k (consider the ratio has multiplied by constant k). Now, 'k' value will be only 8 as it has directly given L = 8. So it will be 8/2n = 1/6. Hence, 2n = 48. ==> n=24. Hence sufficient.
Statement 2: Given that n-3 = 21 ===> n = 24. Hence sufficient. _________________
Thanks & Regards, Vikash Alex (Do like the below link on FB and join us in contributing towards education to under-privilege children.) https://www.facebook.com/svect
Re: At the beginning of the year, the Finance Committee and the Planning C
[#permalink]
Show Tags
25 Oct 2015, 09:46
2
Bunuel wrote:
At the beginning of the year, the Finance Committee and the Planning Committee of a certain company each had n members, and no one was a member of both committees. At the end of the year, 5 members left the Finance Committee and 3 members left the Planning Committee. How many members did the Finance Committee have at the beginning of the year?
(1) The ratio of the total number of members who left at the end of the year to the total number of members at the beginning of the year was 1:6. (2) At the end of the year, 21 members remained on the Planning Committee.
Kudos for a correct solution.
(1) The ratio of the total number of members who left at the end of the year to the total number of members at the beginning of the year was 1:6.
=> total number of members leaving at the end of the year: 5+3 = 8 => Total number of members in the beginning of year: 8*6 = 48 But we do not know the number of members of Planning => do not know the number of Finance
Insufficient (2) At the end of the year, 21 members remained on the Planning Committee.
=> The number of members on the Planning: 21 + 3 = 24 => We do not know the number of members so do not know the number of members in Finance Sufficient
1+2 => Know the number of members in Finance => Sufficient
Re: At the beginning of the year, the Finance Committee and the Planning C
[#permalink]
Show Tags
25 Oct 2015, 10:59
2
1
At the beginning of year Number of people in Finance committee = n Number of people in Planning committee = n
At the end of year Number of people in Finance committee= n-5 Number of people in Planning committee = n-3
1. (5+3)/2n = 1/6 =>n = 48
Sufficient
2. Number of people in Planning committee = n-3 = 21 =>n = 24
At the beginning of year ,number of people in Finance committee = 24 Sufficient
Answer D
_________________
When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long
At the beginning of the year, the Finance Committee and the Planning C
[#permalink]
Show Tags
07 Jun 2017, 22:36
Bunuel wrote:
At the beginning of the year, the Finance Committee and the Planning Committee of a certain company each had n members, and no one was a member of both committees. At the end of the year, 5 members left the Finance Committee and 3 members left the Planning Committee. How many members did the Finance Committee have at the beginning of the year?
(1) The ratio of the total number of members who left at the end of the year to the total number of members at the beginning of the year was 1:6. (2) At the end of the year, 21 members remained on the Planning Committee.
Kudos for a correct solution.
Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
Condition (1) \(5 + 3 : 2n = 1: 6\) \(2n = 48\) Since we have 1 equation of \(n\), this is sufficient.
Condition (2) \(n - 3 = 21\) Since we have 1 equation of \(n\), this is also sufficient.
Therefore, D is the answer.
For cases where we need 1 more equation, such as original conditions with “1 variable”, or “2 variables and 1 equation”, or “3 variables and 2 equations”, we have 1 equation each in both 1) and 2). Therefore, there is 59 % chance that D is the answer, while A or B has 38% chance and C or E has 3% chance. Since D is most likely to be the answer using 1) and 2) separately according to DS definition. Obviously there may be cases where the answer is A, B, C or E.
_________________
Re: At the beginning of the year, the Finance Committee and the Planning C
[#permalink]
Show Tags
07 Oct 2019, 08:44
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.
_________________