Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2601:30 AM EDT
-02:30 AM EDT
Learn how Keshav, a Chartered Accountant, scored an impressive 705 on GMAT in just 30 days with GMATWhiz's expert guidance. In this video, he shares preparation tips and strategies that worked for him, including the mock, time management, and more.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
May 0111:00 AM PDT
-12:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
gsingh0711
Joined: 02 Mar 2018
Last visit: 15 Aug 2018
Posts: 42
Given Kudos: 29
Location: India
Schools: IIMA PGPX"20 IIMA PGPX"20
GMAT 1: 640 Q51 V26
GPA: 3.1
Products:
Updated on: 30 Jul 2018, 21:23
Originally posted by gsingh0711 on 30 Jul 2018, 15:59.
Last edited by Bunuel on 30 Jul 2018, 21:23, edited 2 times in total.
Last edited by Bunuel on 30 Jul 2018, 21:23, edited 2 times in total.
Renamed the topic and edited the question.
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
77% (02:23) correct
23%
(02:49)
wrong
based on 238
sessions
History
Date
Time
Result
Not Attempted Yet
If \(3^{y + 1} + 3^{y − 2} + 3^{y − 3} = 85(3^{x + 5})\), what is the value of y in terms of x?
A. x
B. x + 2
C. x − 2
D. x + 8
E. x − 8
A. x
B. x + 2
C. x − 2
D. x + 8
E. x − 8
30 Jul 2018, 21:11
Kudos
Bookmarks
gsingh0711
Poor question at the first look itself..
All the choices have coefficient of X and y same as y=X or y=X+2
But the two sides tell us that y has 9 as coefficient and X has 85*3, so can never be equal
\(3y + 1 + 3y − 2 + 3y − 3 = 85(3x + 5)........9y-4=255x+425.......9y=255x+429........y=85x/3 + 143/3...\)
If it is
Question is
\(3^{y + 1} + 3^{y − 2} + 3^{y − 3} = 85(3^{x + 5})...................\\
3^{y-3}(3^4+3+1)=85(3^{X+5}...................\\
3^{y-3}*85=85*3^{X+5}......................\\
3^{X+5}=3^{y-3}\)
Equating the powers
x+5=y-3.......y=x+8
D
General Discussion
gsingh0711
Joined: 02 Mar 2018
Last visit: 15 Aug 2018
Posts: 42
Given Kudos: 29
Location: India
Schools: IIMA PGPX"20 IIMA PGPX"20
GMAT 1: 640 Q51 V26
GPA: 3.1
Products:
30 Jul 2018, 16:00
Kudos
Bookmarks
Explanation:
3y+1+3y−2+3y−3=85(3x+5)
⇒ 3y(31+3−2+3−3)=85(3x+5)
⇒ 3y(3+19+127)=85(3(x+5)) )
⇒ 3y(8527)=85(3(x+5))
⇒ 3y=27(3x+5)=33×3x+5
⇒ 3y=3x+8
⇒ y = x + 8
Answer: D.
I think, I deserve a kudus LoL
3y+1+3y−2+3y−3=85(3x+5)
⇒ 3y(31+3−2+3−3)=85(3x+5)
⇒ 3y(3+19+127)=85(3(x+5)) )
⇒ 3y(8527)=85(3(x+5))
⇒ 3y=27(3x+5)=33×3x+5
⇒ 3y=3x+8
⇒ y = x + 8
Answer: D.
I think, I deserve a kudus LoL
thank you for your explanation 
To deserve kudos please make explanation clear and math friendly 
