Last visit was: 23 Jul 2024, 22:19 It is currently 23 Jul 2024, 22:19
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.
Close
Request Expert Reply
Confirm Cancel
SORT BY:
Date
Tags:
Show Tags
Hide Tags
Math Expert
Joined: 02 Sep 2009
Posts: 94589
Own Kudos [?]: 643414 [2]
Given Kudos: 86728
Send PM
avatar
Intern
Intern
Joined: 05 Jun 2016
Posts: 7
Own Kudos [?]: 1 [0]
Given Kudos: 2
Location: India
GMAT 1: 710 Q50 V37
GPA: 1.6
Send PM
Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 10133
Own Kudos [?]: 17052 [1]
Given Kudos: 4
GMAT 1: 760 Q51 V42
GPA: 3.82
Send PM
User avatar
Manager
Manager
Joined: 18 Jan 2010
Posts: 209
Own Kudos [?]: 1014 [0]
Given Kudos: 9
Send PM
Re: What is the value of a + b ? [#permalink]
Bunuel wrote:
What is the value of a + b ?

(1) a - b = 3

(2) a * b = 2


Statement 1

say a = 6, b = 3, then a-b = 3; a+b= 9
a= 12, b= 9, then a-b = 3, a+b= 21.

Not sufficient.


Statement 2

say a = 2, b = 1, then ab= 2, a+b= 3
a= 4, b= 0.5, then ab = 2; a+b= 4.5

Not sufficient.

[b]Combining Statement 1 and 2/b]

(1) a - b = 3
(2) a * b = 2

\((a+b)^2\) = \((a-b)^2\)+ 4ab

We can get the value of \((a+b)^2\) but not exact value of (a+b). [ There will be 2 value of (a+b)

So Not Sufficient.

Answer is E
User avatar
Non-Human User
Joined: 09 Sep 2013
Posts: 34052
Own Kudos [?]: 853 [0]
Given Kudos: 0
Send PM
Re: What is the value of a + b ? [#permalink]
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.
GMAT Club Bot
Re: What is the value of a + b ? [#permalink]
Moderator:
Math Expert
94589 posts