Word problem

Expert replies

John fran kennedi: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Tue Feb 02, 2016 10:25 am; Thanked: 1 times

by John fran kennedi » Mon Mar 21, 2016 9:53 am

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.

OA-> D

Hi expert.
Could you please explain to me why the statement 2 is sufficient?

Like this post

Source: Beat The GMAT — Data Sufficiency | Mon Mar 21, 2016 9:53 am

MartyMurray: Legendary Member; Posts: 2135; Joined: Mon Feb 03, 2014 9:26 amFollowed by: 140 members; Location: https://martymurraycoaching.com/; Thanked: 955 times; GMAT Score:800

by MartyMurray » Tue Mar 22, 2016 1:26 pm

John fran kennedi 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.

OA-> D

Hi expert.
Could you please explain to me why the statement 2 is sufficient?

The question states that each committee had n members at the beginning of the year, meaning that at the beginning of the year the number of members of the Planning Committee was equal to the number of members of the Finance Committee.

Since by adding the 21 in Statement 2 to the 3 in the question you can determine the number of members on the Planning Committee at the beginning of the year, you can also determine the number of members on the Finance Committee at the beginning of the year.

Marty Murray
Perfect Scoring Tutor With Over a Decade of Experience
MartyMurrayCoaching.com
Contact me at [email protected] for a free consultation.

Like this post

John fran kennedi: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Tue Feb 02, 2016 10:25 am; Thanked: 1 times

by John fran kennedi » Tue Mar 22, 2016 3:24 pm

Ok, I now understand perfectly . Thank you so much

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review