It is currently 16 Sep 2026, 04:27
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 16 Sep 2026
Posts: 113,572
Products:
GMAT Club Tests
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 113,572
A certain investment doubled in value every 9 years. If Saidah had $25
Post URL
29 Jul 2018, 23:55
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
Official Answer and Stats are available only to registered users. Register/Login.
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:

78% (01:40) correct 22% (01:58) wrong based on 288 sessions

History

Date
Time
Result
Not Attempted Yet
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
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
New to the GMAT Club?
Signature Read More
1
Kudos
Add Kudos
3
Bookmarks
Bookmark this Post
User avatar
D3N0
User avatar
Joined: 21 Jan 2015
Last visit: 14 Sep 2026
Posts: 584
Location: India
Concentration: Operations, Technology
Schools: Smeal'21 (WD) Arizona State'21 (A$) Simon '21 (WD)
GMAT 1: 620 Q48 V28
GMAT 2: 690 Q49 V35
WE:Operations (Retail: E-commerce)
Products:
My Reviews
Schools: Smeal'21 (WD) Arizona State'21 (A$) Simon '21 (WD)
GMAT 2: 690 Q49 V35
Posts: 584
A certain investment doubled in value every 9 years. If Saidah had $25
Post URL
30 Jul 2018, 00:04
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
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
Show more
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
Mo2men
User avatar
Joined: 26 Mar 2013
Last visit: 09 May 2023
Posts: 2,425
Concentration: Operations, Strategy
Schools: Erasmus (II)
Products:
My Reviews
Schools: Erasmus (II)
Posts: 2,425
A certain investment doubled in value every 9 years. If Saidah had $25
Post URL
31 Jul 2018, 00:06
Bunuel
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
Show more

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
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
User avatar
Abhishek009
User avatar
Board of Directors
Joined: 11 Jun 2011
Last visit: 17 Dec 2025
Posts: 5,878
Status:QA & VA Forum Moderator
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Posts: 5,878
A certain investment doubled in value every 9 years. If Saidah had $25
Post URL
31 Jul 2018, 06:57
Bunuel
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
Show more

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)

_________________
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 )
Signature Read More
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 15 Sep 2026
Posts: 22,740
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 22,740
A certain investment doubled in value every 9 years. If Saidah had $25
Post URL
10 Aug 2018, 18:08
Bunuel
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
Show more

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

_________________
See why Target Test Prep is the top rated GMAT course on GMAT Club. Read Our Reviews
Signature Read More
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 39,225
Posts: 39,225
A certain investment doubled in value every 9 years. If Saidah had $25
Post URL
26 Sep 2024, 20:44
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.

_________________

Drill more questions that test the same idea in GMAT Club Timed Quiz → Free.

Signature Read More
Kudos
Add Kudos
Bookmarks
Bookmark this Post
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderator:
Bunuel
Math Expert
113572 posts