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

 It is currently 16 Oct 2018, 03:30

### 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

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

# What is the volume that a certain jar can hold?

Author Message
TAGS:

### Hide Tags

Director
Status: I don't stop when I'm Tired,I stop when I'm done
Joined: 11 May 2014
Posts: 542
GPA: 2.81
What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

05 Jun 2016, 14:46
4
00:00

Difficulty:

55% (hard)

Question Stats:

59% (01:34) correct 41% (01:27) wrong based on 94 sessions

### HideShow timer Statistics

What is the volume that a certain jar can hold?

(1) The jar currently holds 5 cups of soup.

(2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

_________________

Md. Abdur Rakib

Please Press +1 Kudos,If it helps
Sentence Correction-Collection of Ron Purewal's "elliptical construction/analogies" for SC Challenges

Manager
Joined: 18 May 2016
Posts: 67
GMAT 1: 720 Q49 V39
GPA: 3.7
WE: Analyst (Investment Banking)
What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

06 Jun 2016, 08:41
I feel this is not a completely correct question, since one can only answer the volume in cups in this question, and not the actual volume of the jar. also, the first stem sounds ambigious - it's either the jar is fully filled with 5 cups, or it currently contains 5 cups, but we don't know if it is full of not. Please correct me if I am wrong.

(1) 5 cups
NOT SUFFICIENT since we don't know the volume of each cup

(2)
Total volume = V
Volume of a cup = C
$$\frac{1}{3}V + 2C = 2V$$
NOT SUFFICIENT since we don't know the volume of the cup

1, 2) Assuming one jar is filled with 5 cups
V = 5C
$$\frac{1}{3}5C + 2C = 10C$$
_________________

My debrief: Self-study: How to improve from 620(Q39,V36) to 720(Q49,V39) in 25 days!

Director
Status: I don't stop when I'm Tired,I stop when I'm done
Joined: 11 May 2014
Posts: 542
GPA: 2.81
What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

06 Jun 2016, 11:02
1
AbdurRakib wrote:
What is the volume that a certain jar can hold?

(1) The jar currently holds 5 cups of soup.

(2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

Kaplan's Official Solution:

Statement (1): insufficient. This tells us that the jar can hold at least 5 cups, but it doesn't tell us its maximum capacity. Eliminate choices (A) and (D).

Statement (2): sufficient. If adding 2 cups of soup doubles the volume, then there were already 2 cups of soup in the jar. So 2 cups =$$\frac{1}{3}$$ of the volume of the jar, and the total volume that the jar can hold is 2 × 3 = 6 cups. Therefore choice (B) is correct.
_________________

Md. Abdur Rakib

Please Press +1 Kudos,If it helps
Sentence Correction-Collection of Ron Purewal's "elliptical construction/analogies" for SC Challenges

Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 6369
GMAT 1: 760 Q51 V42
GPA: 3.82
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

06 Jun 2016, 22:11
1
There are 2 variables in the original condition (the original volume and capacity). In order to match the number of variables to the number of equations, we need 2 equations. However, since the condition 1) and the condition 2) each has 1 equation, there is high chance that C is the correct answer.

The condition 1) has 1 equation.
The condition 2) has 2 equations. Hence, the correct answer is B.
Attachments

variable approach's answer probability.jpg [ 219.74 KiB | Viewed 1416 times ]

_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only \$99 for 3 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"

Senior Manager
Joined: 18 Jan 2010
Posts: 252
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

07 Jun 2016, 01:12
1
AbdurRakib wrote:
What is the volume that a certain jar can hold?

(1) The jar currently holds 5 cups of soup.

(2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

Statement 1: Doesnt tell us about capacity of jar.

Statement 2:

Existing volume: $$\frac{1}{3}$$ of total volume of jar (let us call total volume as V)

Final Volume: Twice of existing = $$\frac{2}{3}$$ of V

Increase: $$\frac{V}{3}$$

Now $$\frac{V}{3}$$ = 2 cups.

V is known.

Current Student
Joined: 18 Oct 2014
Posts: 856
Location: United States
GMAT 1: 660 Q49 V31
GPA: 3.98
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

07 Jun 2016, 09:26
AbdurRakib wrote:
What is the volume that a certain jar can hold?

(1) The jar currently holds 5 cups of soup.

(2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

IMO it would be more clear if the question ask the volume in cups the jar can hold.

(1) The jar currently holds 5 cups of soup. We don't know how much it can hold i.e the capacity

2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

2 cups= 1/3rd of the volume

So, total volume would be 6 cups. Sufficient

_________________

I welcome critical analysis of my post!! That will help me reach 700+

Manager
Joined: 29 Nov 2011
Posts: 102
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

07 Jun 2016, 22:13
Suppose x volum is already in jar.
x+2 (cups)= 2x
x= 2 only no other number satisfy this plan.
2 cups already in jar which constitutes 1/3 of the volume; hence 2*3 = 6 = total volume. B is suff
Intern
Joined: 26 Nov 2015
Posts: 31
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

08 Jun 2016, 05:35
A tricks you but doesnt tell the volume reference hence non sufficient
B option gives you volume of jar and cup size volume, hence sufficient

Sent from my Mi 4i using Tapatalk
_________________

PS : I do mind kudos

Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 8384
Location: Pune, India
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

08 Jun 2016, 21:40
2
AbdurRakib wrote:
What is the volume that a certain jar can hold?

(1) The jar currently holds 5 cups of soup.

(2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

In such a question, I would answer (E) and move on. The volume of a certain container has to be in terms of a standard unit such as gallons or litres. How do you say what is one cup? Neither statement gives the volume of a cup and hence you can't say what the volume of the jar is.
_________________

Karishma
Veritas Prep GMAT Instructor

GMAT self-study has never been more personalized or more fun. Try ORION Free!

Manager
Joined: 05 Dec 2015
Posts: 118
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

14 Feb 2017, 00:09
Can we please edit the question, i view it as incorrect? saying the jar can hold 6 cups is NS, what if a cup is 1 ounce? what if it's 100 ounces? When you say volume, I read it as a distinct, non-arguable amount.

AbdurRakib wrote:
AbdurRakib wrote:
What is the volume that a certain jar can hold?

(1) The jar currently holds 5 cups of soup.

(2) If 2 cups of soup are added to the jar when it is already $$\frac{1}{3}$$ full of soup, the volume of soup in the jar will double.

Kaplan's Official Solution:

Statement (1): insufficient. This tells us that the jar can hold at least 5 cups, but it doesn't tell us its maximum capacity. Eliminate choices (A) and (D).

Statement (2): sufficient. If adding 2 cups of soup doubles the volume, then there were already 2 cups of soup in the jar. So 2 cups =$$\frac{1}{3}$$ of the volume of the jar, and the total volume that the jar can hold is 2 × 3 = 6 cups. Therefore choice (B) is correct.
Senior Manager
Joined: 08 Dec 2015
Posts: 298
GMAT 1: 600 Q44 V27
Re: What is the volume that a certain jar can hold?  [#permalink]

### Show Tags

19 Feb 2017, 14:51
In Kaplan universe the volume is measured in cubic cups.
Re: What is the volume that a certain jar can hold? &nbs [#permalink] 19 Feb 2017, 14:51
Display posts from previous: Sort by