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

 It is currently 05 Dec 2019, 13:25

### 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

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

# What is the value of 1/x + 1/y + 1/z ?

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 59561
What is the value of 1/x + 1/y + 1/z ?  [#permalink]

### Show Tags

20 Feb 2018, 23:26
00:00

Difficulty:

15% (low)

Question Stats:

88% (00:46) correct 12% (01:51) wrong based on 50 sessions

### HideShow timer Statistics

What is the value of $$\frac{1}{x} + \frac{1}{y} + \frac{1}{z}$$ ?

(1) $$\frac{xy + xz + yz}{xyz}= 4$$

(2) $$x + y=3$$
Senior Manager
Joined: 17 Oct 2016
Posts: 305
Location: India
Concentration: Operations, Strategy
GPA: 3.73
WE: Design (Real Estate)
Re: What is the value of 1/x + 1/y + 1/z ?  [#permalink]

### Show Tags

20 Feb 2018, 23:31
A

Statement 1 directly gives the answer. Sufficient

From statement 2 we don’t know the value of z. Insufficient

Posted from my mobile device
Manager
Joined: 23 Sep 2016
Posts: 232
Re: What is the value of 1/x + 1/y + 1/z ?  [#permalink]

### Show Tags

21 Feb 2018, 23:46
Bunuel wrote:
What is the value of $$\frac{1}{x} + \frac{1}{y} + \frac{1}{z}$$ ?

(1) $$\frac{xy + xz + yz}{xyz}= 4$$

(2) $$x + y=3$$

A is sufficient as if we try to solve question as much as possible then we will form equation same as A whereas B is insufficient as it will only take us to 3Z+XY/XYZ
Manager
Status: So far only Dreams i have!!
Joined: 05 Jan 2015
Posts: 139
WE: Consulting (Consulting)
Re: What is the value of 1/x + 1/y + 1/z ?  [#permalink]

### Show Tags

29 Oct 2019, 05:23
Statement 1 is sufficient straightway.

Statement 2 doesn't get us any output for the expression. Insufficient.

Re: What is the value of 1/x + 1/y + 1/z ?   [#permalink] 29 Oct 2019, 05:23
Display posts from previous: Sort by