If -3x < 6, which of the following must be true?
A. x < -3
B. x < -2
C. x > 3
D. x > -2
E. x > 0
The OA is the option D.
What is the best approach to solving this PS question? May someone helps me?
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
If -3x < 6, which of the following must be true?
This topic has expert replies
GMAT/MBA Expert
-
Brent@GMATPrepNow
- GMAT Instructor
- Posts: 16207
- Joined: Mon Dec 08, 2008 6:26 pm
- Location: Vancouver, BC
- Thanked: 5254 times
- Followed by:1268 members
- GMAT Score:770
Given: -3x < 6M7MBA wrote:If -3x < 6, which of the following must be true?
A. x < -3
B. x < -2
C. x > 3
D. x > -2
E. x > 0
Divide both sides by -3 to get: x > -2 [ASIDE: since we divided both sides by a NEGATIVE value (-3), we has to REVERSE the direction of the inequality]
Answer: D
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
GMAT/MBA Expert
-
[email protected]
- Elite Legendary Member
- Posts: 10392
- Joined: Sun Jun 23, 2013 6:38 pm
- Location: Palo Alto, CA
- Thanked: 2867 times
- Followed by:511 members
- GMAT Score:800
Hi M7MBA,
We're told that -3X < 6. We're asked which of the following MUST be true. This question can be approached in a couple of different ways, including by TESTing VALUES.
The easiest value to choose for X would be X=0. With that one TEST, there's only one Answer that is true...
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
We're told that -3X < 6. We're asked which of the following MUST be true. This question can be approached in a couple of different ways, including by TESTing VALUES.
The easiest value to choose for X would be X=0. With that one TEST, there's only one Answer that is true...
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
GMAT/MBA Expert
-
Jeff@TargetTestPrep
- GMAT Instructor
- Posts: 1462
- Joined: Thu Apr 09, 2015 9:34 am
- Location: New York, NY
- Thanked: 39 times
- Followed by:22 members
We can divide both sides of the inequality by -3 (and don't forget to switch the inequality sign) to obtain:M7MBA wrote:If -3x < 6, which of the following must be true?
A. x < -3
B. x < -2
C. x > 3
D. x > -2
E. x > 0
x > -2
Answer: D
Jeffrey Miller
Head of GMAT Instruction
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews
