GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 22 Feb 2019, 18:46

### 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

## Events & Promotions

###### Events & Promotions in February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
• ### Free GMAT RC Webinar

February 23, 2019

February 23, 2019

07:00 AM PST

09:00 AM PST

Learn reading strategies that can help even non-voracious reader to master GMAT RC. Saturday, February 23rd at 7 AM PT
• ### FREE Quant Workshop by e-GMAT!

February 24, 2019

February 24, 2019

07:00 AM PST

09:00 AM PST

Get personalized insights on how to achieve your Target Quant Score.

# If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Senior RC Moderator
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 2260
Location: Pakistan
GPA: 3.39
If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5  [#permalink]

### Show Tags

03 Feb 2019, 10:04
1
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:27) correct 0% (00:00) wrong based on 13 sessions

### HideShow timer Statistics

If ax + ay + az = 15, what is x + y + z ?

(1) x = 2

(2) a = 5

_________________

New Project RC Butler 2019 - Practice 2 RC Passages Everyday
Final days of the GMAT Exam? => All GMAT Flashcards.
This Post Helps = Press +1 Kudos
Best of Luck on the GMAT!!

VP
Joined: 31 Oct 2013
Posts: 1162
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5  [#permalink]

### Show Tags

03 Feb 2019, 10:25
1
SajjadAhmad wrote:
If ax + ay + az = 15, what is x + y + z ?

(1) x = 2

(2) a = 5

we are looking for the value of x + y + z.

Given,

ax + ay + az = 15

a( x + y + z) = 15.

Statement 1: x=2. we don't know the value of a, y and z. NOT sufficient.

Statement 2: a=5.

a(x + y + z) = 15

5 ( x + y + z) = 15

x + y + z = 3.

Sufficient.

B is the correct answer.
VP
Joined: 09 Mar 2018
Posts: 1002
Location: India
Re: If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5  [#permalink]

### Show Tags

03 Feb 2019, 10:32
SajjadAhmad wrote:
If ax + ay + az = 15, what is x + y + z ?

(1) x = 2

(2) a = 5

IMO B

a(x+y+z) = 15

x+y+z = 15/a

1) x =2
Doesn't tell anything

2) when put back in the question gives value x + y + z as 3
_________________

If you notice any discrepancy in my reasoning, please let me know. Lets improve together.

Quote which i can relate to.
Many of life's failures happen with people who do not realize how close they were to success when they gave up.

SVP
Joined: 18 Aug 2017
Posts: 1928
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5  [#permalink]

### Show Tags

04 Feb 2019, 02:09
1
SajjadAhmad wrote:
If ax + ay + az = 15, what is x + y + z ?

(1) x = 2

(2) a = 5

xa + ay + az = 15
a(x+y+x)=15

#1
x=2
not sufficient as values of y,z,a are not know
#2
a=5
so x+y+x= 3
sufficient
IMO B
_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.

Re: If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5   [#permalink] 04 Feb 2019, 02:09
Display posts from previous: Sort by

# If ax + ay + az = 15, what is x + y + z ? (1) x = 2 (2) a = 5

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.