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

 It is currently 17 Oct 2019, 06:05

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

A certain encyclopedia has 20 volumes, each of which is w

Author Message
TAGS:

Hide Tags

Intern
Joined: 04 Aug 2011
Posts: 29
A certain encyclopedia has 20 volumes, each of which is w  [#permalink]

Show Tags

06 Aug 2011, 05:08
2
00:00

Difficulty:

65% (hard)

Question Stats:

56% (02:06) correct 44% (02:20) wrong based on 43 sessions

HideShow timer Statistics

A certain encyclopedia has 20 volumes, each of which is w inches wide, k inches long and t inches thick. If all of the volumes are to be tightly packaged in one rectangular box that is k inches wide and w inches deep inside, could the inside length of the box less than 35 inches

(1) t = 1.5
(2) w=9 and k=12
Manager
Status: Trying to survive
Joined: 29 Jun 2011
Posts: 153
GMAt Status: Quant section
Concentration: Finance, Real Estate
Schools: WBS (D)
GMAT Date: 12-30-2011
GPA: 3.2
Re: A math problem, pls help to solve it(11)  [#permalink]

Show Tags

06 Aug 2011, 09:28
1
Jasontuyj2012 wrote:
A certain encyclopedia has 20 volumes, each of which is w inches wide, k inches long and t inches thick. If all of the volumes are to be tightly packaged in one rectangular box that is k inches wide and w inches deep inside, could the inside length of the box less than 35 inches

(1) t = 1.5
(2) w=9 and k=12

you should think about it like is T * 20 < 35

statement 1 tells us that t=1.5 so 1.5 * 20 < 35 so 30<35 suffiecint

_________________
How can i lose my faith in life's fairness when i know that the dreams of those who sleep on the feathers are not more beautiful than the dreams of those who sleep on the ground? - Jubran Khaleel Jubran
Intern
Joined: 04 Aug 2011
Posts: 29
Re: A math problem, pls help to solve it(11)  [#permalink]

Show Tags

07 Aug 2011, 18:31
I'm so stupid, I got it. Thank you so much for the explaination.

Silver89 wrote:
Jasontuyj2012 wrote:
A certain encyclopedia has 20 volumes, each of which is w inches wide, k inches long and t inches thick. If all of the volumes are to be tightly packaged in one rectangular box that is k inches wide and w inches deep inside, could the inside length of the box less than 35 inches

(1) t = 1.5
(2) w=9 and k=12

you should think about it like is T * 20 < 35

statement 1 tells us that t=1.5 so 1.5 * 20 < 35 so 30<35 suffiecint

Manager
Status: Trying to survive
Joined: 29 Jun 2011
Posts: 153
GMAt Status: Quant section
Concentration: Finance, Real Estate
Schools: WBS (D)
GMAT Date: 12-30-2011
GPA: 3.2
Re: A math problem, pls help to solve it(11)  [#permalink]

Show Tags

07 Aug 2011, 19:03
Jasontuyj2012 wrote:
I'm so stupid, I got it. Thank you so much for the explaination.

Silver89 wrote:
Jasontuyj2012 wrote:
A certain encyclopedia has 20 volumes, each of which is w inches wide, k inches long and t inches thick. If all of the volumes are to be tightly packaged in one rectangular box that is k inches wide and w inches deep inside, could the inside length of the box less than 35 inches

(1) t = 1.5
(2) w=9 and k=12

you should think about it like is T * 20 < 35

statement 1 tells us that t=1.5 so 1.5 * 20 < 35 so 30<35 suffiecint

no man you are not stupid , you are just new to this type of this questions and you are learning
and believe me , at the first of my prep. , i asked question for which i can kill someone if he asked it
_________________
How can i lose my faith in life's fairness when i know that the dreams of those who sleep on the feathers are not more beautiful than the dreams of those who sleep on the ground? - Jubran Khaleel Jubran
Manager
Status: Trying to survive
Joined: 29 Jun 2011
Posts: 153
GMAt Status: Quant section
Concentration: Finance, Real Estate
Schools: WBS (D)
GMAT Date: 12-30-2011
GPA: 3.2
Re: A math problem, pls help to solve it(11)  [#permalink]

Show Tags

07 Aug 2011, 19:05
and one kudos for encouraging you
_________________
How can i lose my faith in life's fairness when i know that the dreams of those who sleep on the feathers are not more beautiful than the dreams of those who sleep on the ground? - Jubran Khaleel Jubran
Intern
Joined: 04 Aug 2011
Posts: 29
Re: A math problem, pls help to solve it(11)  [#permalink]

Show Tags

08 Aug 2011, 22:37
I think I'm stupid.

If I make this kind of careless during the exam, it is unforgiveable to myself.

Silver89 wrote:
and one kudos for encouraging you
Intern
Joined: 11 Feb 2019
Posts: 11
Location: United Arab Emirates
Re: A certain encyclopedia has 20 volumes, each of which is w  [#permalink]

Show Tags

18 Feb 2019, 00:53
Jasontuyj2012 wrote:
A certain encyclopedia has 20 volumes, each of which is w inches wide, k inches long and t inches thick. If all of the volumes are to be tightly packaged in one rectangular box that is k inches wide and w inches deep inside, could the inside length of the box less than 35 inches

(1) t = 1.5
(2) w=9 and k=12

My approach:

20kwt=lwk

the total volume of the books should be the same as the box they are in, since they are tightly packed

20t=l.... is l<35?

S1: t=1.5 then l= 30, l is less than 35 SUFFICIENT
S2: values of k and w are not needed they reduce the original equation to 20 x 9 x 12 x t = 9 x w x l. 2 vars 1 equation INSUFF

ans A
Re: A certain encyclopedia has 20 volumes, each of which is w   [#permalink] 18 Feb 2019, 00:53
Display posts from previous: Sort by