BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

If \(x = 1 – 2y\), what is \(z?\)

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3008
Joined: Mon Aug 22, 2016 6:19 am
Location: Grand Central / New York
Thanked: 470 times
Followed by:34 members

by Jay@ManhattanReview » Tue Dec 03, 2019 10:59 pm
Vincen wrote:If \(x = 1 - 2y\), what is \(z?\)

(1) \(5x + 10y + z = 5\)

(2) \(x = 17 + 2y\)

[spoiler]OA=A[/spoiler]

Source: Veritas Prep
Let's take each statement one by one.

(1) \(5x + 10y + z = 5\)

Plugging-n the value of \(x = 1 - 2y\) in \(5x + 10y + z = 5\), we get \(5(1 - 2y) + 10y + z = 5\)

Thus, z = 0. Sufficient.

(2) \(x = 17 + 2y\)

No information of z. Insufficient.

The correct answer: A

Hope this helps!

-Jay
_________________
Manhattan Review GRE Prep

Locations: GRE Classes Raleigh NC | GRE Prep Course Singapore | GRE Prep Philadelphia | SAT Prep Classes Toronto | and many more...

Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.
Top
Post new topic Post Reply
• Page 1 of 1