GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video
close
It is currently 20 Sep 2021, 04:11
Register
GMAT Club Tests
Decision Tracker
My Rewards
New posts
New comers' posts

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.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10
5 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
SORT BY:
Date
Kudos
Tags:
Find Similar Topics 

Show Tags
Hide Tags

User avatar
V
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 79186
Premium Member CAT Tests Forum Quiz Mode Top Member of the Month
What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10 [#permalink] New post  24 Dec 2013, 02:45
3
Kudos
2
Bookmarks
Expert Reply
Attempt only this question Same topic and source Same topic and difficulty Same source and difficulty Random Chronological Reverse chronological Learn more
00:00
A
B
C
D
E

Difficulty:

5% (low)

Question Stats:

91% (00:29) correct 9% (00:37) wrong based on 1187 sessions

Hide Show timer Statistics

What is the value of r/2 + s/2 ?

(1) (r + s)/2 = 5
(2) r + s = 10
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
Attempt only this question Same topic and source Same topic and difficulty Same source and difficulty Random Chronological Reverse chronological Learn more
User avatar
V
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 79186
Premium Member CAT Tests Forum Quiz Mode Top Member of the Month
Re: What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10 [#permalink] New post  24 Dec 2013, 02:45
1
Bookmarks
Expert Reply
SOLUTION

What is the value of r/2 + s/2 ?

\(\frac{r}{2}+ \frac{s}{2}=\frac{r + s}{2}\)

(1) (r + s)/2 = 5 --> directly answers the question. Sufficient.

(2) r + s= 10 --> \(\frac{r + s}{2}=\frac{10}{2}=5\). Sufficient.

Answer: D.
_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
User avatar
nutshell
Manager
Manager
Joined: 21 Mar 2011
Status:GMATting
Posts: 104
Concentration: Strategy, Technology
GMAT 1: 590 Q45 V27
GMAT ToolKit User
Re: What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10 [#permalink] New post  25 Dec 2013, 09:46
The question can be rephrased as (r+s)/2, since the denominator is the same. So, ultimately we need to find out either r and s individually or (r+s) as a value.
This can be arrived without looking at the statements.
Statement 1 and Statement 2 both give the value of (r+s) alone. So, answer is D.
User avatar
V
BrentGMATPrepNow
GMAT Club Legend
GMAT Club Legend
Joined: 11 Sep 2015
Posts: 5699
Location: Canada
Top Member of the Month
Re: What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10 [#permalink] New post  Updated on: 26 Sep 2020, 06:32
1
Kudos
Expert Reply
Top Contributor
Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

What is the value of r/2 + s/2 ?

(1) (r + s)/2 = 5
(2) r + s = 10



Target question: What is the value of r/2 + s/2?
This is a great candidate for REPHRASING the target question.
Since both fractions have the same denominator, we can add the numerators.
We get: r/2 + s/2 = (r + s)/2
REPHRASED target question: What is the value of (r + s)/2

Statement 1: (r + s)/2 = 5
This is PERFECT!
Since we can answer the REPHRASED target question with certainty, statement 1 is SUFFICIENT

Statement 2: r + s = 10
If r + s = 10, then (r + s)/2 = (10)/2 = 5
Since we can answer the REPHRASED target question with certainty, statement 2 is SUFFICIENT

Answer =
Show Spoiler
D


RELATED VIDEO

_________________
Image
Signature Read More

Originally posted by BrentGMATPrepNow on 22 Jul 2016, 10:25.
Last edited by BrentGMATPrepNow on 26 Sep 2020, 06:32, edited 1 time in total.
User avatar
V
ScottTargetTestPrep
Target Test Prep Representative
Joined: 14 Oct 2015
Status:Founder & CEO
Affiliations: Target Test Prep
Posts: 14787
Location: United States (CA)
Re: What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10 [#permalink] New post  16 Jun 2021, 03:20
1
Kudos
Expert Reply
Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

What is the value of r/2 + s/2 ?

(1) (r + s)/2 = 5
(2) r + s= 10


Solution:

Question Stem Analysis:

We need to determine the value of r/2 + s/2, i.e., (r + s)/2.

Statement One Alone:

We can re-express the fraction (r + s) / 2 as the sum of two fractions: r/2 + s/2. Thus, the sum is 5. Statement one alone is sufficient.

Statement Two Alone:

Since r + s = 10, then (r +s)/2 = 10/2 = 5. Statement two alone is sufficient.

Answer: D
_________________

See why Target Test Prep is the top rated GMAT course on GMAT Club. Read Our Reviews

Signature Read More
GMAT Club Bot
gmatclubot
Re: What is the value of r/2 + s/2 ? (1) (r + s)/2 = 5 (2) r + s = 10 [#permalink]
16 Jun 2021, 03:20
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderators:
chetan2u
Math Expert
10379 posts
Bunuel
Math Expert
79186 posts
GMATBusters
GMAT Tutor
2013 posts
nick1816
DS Forum Moderator
2287 posts

cron

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

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions