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

It is currently 13 Dec 2018, 19:07

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • GMATbuster's Weekly GMAT Quant Quiz, Tomorrow, Saturday at 9 AM PST

     December 14, 2018

     December 14, 2018

     09:00 AM PST

     10:00 AM PST

    10 Questions will be posted on the forum and we will post a reply in this Topic with a link to each question. There are prizes for the winners.
  • The winning strategy for 700+ on the GMAT

     December 13, 2018

     December 13, 2018

     08:00 AM PST

     09:00 AM PST

    What people who reach the high 700's do differently? We're going to share insights, tips and strategies from data we collected on over 50,000 students who used examPAL.

A certain investment doubled in value every 9 years. If Saidah had $25

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 51185
A certain investment doubled in value every 9 years. If Saidah had $25  [#permalink]

Show Tags

New post 29 Jul 2018, 23:55
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

76% (01:16) correct 24% (01:15) wrong based on 83 sessions

HideShow timer Statistics

A certain investment doubled in value every 9 years. If Saidah had $25,125 in the investment when she was 27 years old, what was the value of the investment when she retired at 63 years old?


(A) $50,250

(B) $150,750

(C) $201,000

(D) $251,250

(E) $402,000

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Senior Manager
Senior Manager
User avatar
S
Joined: 21 Jan 2015
Posts: 355
Location: India
Concentration: Strategy, Marketing
GMAT 1: 620 Q48 V28
GMAT 2: 690 Q49 V35
WE: Sales (Consumer Products)
GMAT ToolKit User CAT Tests
Re: A certain investment doubled in value every 9 years. If Saidah had $25  [#permalink]

Show Tags

New post 30 Jul 2018, 00:04
1
Ans; E

X'= (2)^n * X
here time duration to double is 9 years : so from 27 to 63 total 4 Double time durations. so n=4
X' = 2^4 * 25125 = 16*25125 = $402,000

Bunuel wrote:
A certain investment doubled in value every 9 years. If Saidah had $25,125 in the investment when she was 27 years old, what was the value of the investment when she retired at 63 years old?

(A) $50,250

(B) $150,750

(C) $201,000

(D) $251,250

(E) $402,000

_________________

--------------------------------------------------------------------
The Mind is Everything, What we Think we Become.

SVP
SVP
User avatar
D
Joined: 26 Mar 2013
Posts: 1911
Reviews Badge CAT Tests
Re: A certain investment doubled in value every 9 years. If Saidah had $25  [#permalink]

Show Tags

New post 31 Jul 2018, 00:06
Bunuel wrote:
A certain investment doubled in value every 9 years. If Saidah had $25,125 in the investment when she was 27 years old, what was the value of the investment when she retired at 63 years old?


(A) $50,250

(B) $150,750

(C) $201,000

(D) $251,250

(E) $402,000


Number of times the investment is doubled = (63-27)/ 9 = 4

The answer choices are spread out so we can make some approximation. So Consider Sadish has $25,000

Period 1: 50,000
Period 2: 100,00
Period 3: 200,000
Period 4 : 400,000

The closes answer is $402,000

Answer: E
Board of Directors
User avatar
P
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4276
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User Premium Member CAT Tests
Re: A certain investment doubled in value every 9 years. If Saidah had $25  [#permalink]

Show Tags

New post 31 Jul 2018, 06:57
Bunuel wrote:
A certain investment doubled in value every 9 years. If Saidah had $25,125 in the investment when she was 27 years old, what was the value of the investment when she retired at 63 years old?


(A) $50,250

(B) $150,750

(C) $201,000

(D) $251,250

(E) $402,000


27 Years , Investment is $25,125
36 Years , Investment is $50,250
45 Years , Investment is $1,00,500
54 Years , Investment is $ 2,01,000
63 Years , Investment is $4,02,000 Answer must be (E)
_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

Target Test Prep Representative
User avatar
P
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 4294
Location: United States (CA)
Re: A certain investment doubled in value every 9 years. If Saidah had $25  [#permalink]

Show Tags

New post 10 Aug 2018, 18:08
Bunuel wrote:
A certain investment doubled in value every 9 years. If Saidah had $25,125 in the investment when she was 27 years old, what was the value of the investment when she retired at 63 years old?


(A) $50,250

(B) $150,750

(C) $201,000

(D) $251,250

(E) $402,000


We are given that Saidah’s investment doubled in value every 9 years, so let’s keep track how much she will have every 9 years, beginning with age 27:

Age 27: $25,125

Age 36: $50,250

Age 45: $100,500

Age 54: $201,000

Age 63: $402,000

Answer: E
_________________

Scott Woodbury-Stewart
Founder and CEO

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

GMAT Club Bot
Re: A certain investment doubled in value every 9 years. If Saidah had $25 &nbs [#permalink] 10 Aug 2018, 18:08
Display posts from previous: Sort by

A certain investment doubled in value every 9 years. If Saidah had $25

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.