If 3x + 12 = 21, then x + 4 =
A. 3
B. 4
C. 5
D. 7
E. 9
OA D
Source: Princeton Review
If 3x + 12 = 21, then x + 4 =
This topic has expert replies
-
- Moderator
- Posts: 7187
- Joined: Thu Sep 07, 2017 4:43 pm
- Followed by:23 members
GMAT/MBA Expert
- Jay@ManhattanReview
- GMAT Instructor
- Posts: 3008
- Joined: Mon Aug 22, 2016 6:19 am
- Location: Grand Central / New York
- Thanked: 470 times
- Followed by:34 members
We have 3x + 12 = 21BTGmoderatorDC wrote:If 3x + 12 = 21, then x + 4 =
A. 3
B. 4
C. 5
D. 7
E. 9
OA D
Source: Princeton Review
Takin 3 as common, we have 3(x + 4) = 21 => x + 4 = 21/3 = 7.
The correct answer: D
Hope this helps!
-Jay
_________________
Manhattan Review GMAT Prep
Locations: GMAT Classes London | GMAT Prep Courses Shanghai | LSAT Prep Courses Boston | SAT Prep Classes Charlotte | and many more...
Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.