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

It is currently 10 Dec 2018, 01:52

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
  • Free lesson on number properties

     December 10, 2018

     December 10, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.
  • Free GMAT Prep Hour

     December 11, 2018

     December 11, 2018

     09:00 PM EST

     10:00 PM EST

    Strategies and techniques for approaching featured GMAT topics. December 11 at 9 PM EST.

As shown in the figure above, a cylindrical oil tank is i full. If 3

  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: 51060
As shown in the figure above, a cylindrical oil tank is i full. If 3  [#permalink]

Show Tags

New post 08 Feb 2018, 04:38
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (00:56) correct 9% (00:21) wrong based on 54 sessions

HideShow timer Statistics

Image
As shown in the figure above, a cylindrical oil tank is i full. If 3 more gallons are added, the tank will be half full. What is the capacity, in gallons, of the tank?

(A) 15
(B) 16
(C) 17
(D) 18
(E) 19

Attachment:
2018-02-08_1636.png
2018-02-08_1636.png [ 7.29 KiB | Viewed 840 times ]

_________________

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

Intern
Intern
avatar
B
Joined: 26 Sep 2017
Posts: 31
CAT Tests
Re: As shown in the figure above, a cylindrical oil tank is i full. If 3  [#permalink]

Show Tags

New post 08 Feb 2018, 04:44
1/3x+3=1/2x
X+9/3=1/2x
2x+18=3x
X=18

Ans D

Sent from my Redmi Note 3 using GMAT Club Forum mobile app
Manager
Manager
User avatar
B
Joined: 28 Jan 2018
Posts: 53
Location: Netherlands
Concentration: Finance
GMAT 1: 710 Q50 V36
GPA: 3
Re: As shown in the figure above, a cylindrical oil tank is i full. If 3  [#permalink]

Show Tags

New post 08 Feb 2018, 06:03
3 gallons is equal to 1/2 - 1/3 = 1/6 of the total capacity of the tank

Therefore capacity of the tank is 3 / (1/6) = 18 gallons

=> Answer D
Director
Director
User avatar
D
Joined: 27 May 2012
Posts: 627
Premium Member
Re: As shown in the figure above, a cylindrical oil tank is i full. If 3  [#permalink]

Show Tags

New post 04 Oct 2018, 08:53
Bunuel wrote:
Image
As shown in the figure above, a cylindrical oil tank is i full. If 3 more gallons are added, the tank will be half full. What is the capacity, in gallons, of the tank?

(A) 15
(B) 16
(C) 17
(D) 18
(E) 19

Attachment:
2018-02-08_1636.png

Dear Moderator,
There seems to be a small typo here , instead of 1/3 , only letter "i" can come up, hope you will do the needful. Thank you.
_________________

- Stne

Intern
Intern
avatar
B
Joined: 19 Apr 2017
Posts: 46
Re: As shown in the figure above, a cylindrical oil tank is i full. If 3  [#permalink]

Show Tags

New post 04 Oct 2018, 10:29
A cylindrical oil tank is 1/3 means current volume =1/3V

3 gallons added to the existing 1/3 it becomes half =>\(1/3V+3=1/2V\)


What is the capacity, in gallons, of the tank?
Solving for \(1/3V+3=1/2V\)

\(1/6v=3\)

volume=18 so D
Target Test Prep Representative
User avatar
P
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 4261
Location: United States (CA)
Re: As shown in the figure above, a cylindrical oil tank is i full. If 3  [#permalink]

Show Tags

New post 07 Oct 2018, 18:24
Bunuel wrote:
Image
As shown in the figure above, a cylindrical oil tank is i full. If 3 more gallons are added, the tank will be half full. What is the capacity, in gallons, of the tank?

(A) 15
(B) 16
(C) 17
(D) 18
(E) 19

Attachment:
2018-02-08_1636.png


We can let n = the total capacity and create the equation:

n/3 + 3 = n/2

Multiplying by 6 we have:

2n + 18 = 3n

18 = n

Alternate Solution:

The amount of oil in the tank increases from 1/3 to 1/2, which is 1/2 - 1/3 = 3/6 - 2/6 = 1/6 of the tank, and this is equal to 3 gallons. We see that if 3 gallons is 1/6 of the tank’s capacity, then 3 x 6 = 18 gallons is the tank’s total capacity.

Answer: D
_________________

Scott Woodbury-Stewart
Founder and CEO

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

GMAT Club Bot
Re: As shown in the figure above, a cylindrical oil tank is i full. If 3 &nbs [#permalink] 07 Oct 2018, 18:24
Display posts from previous: Sort by

As shown in the figure above, a cylindrical oil tank is i full. If 3

  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®.