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

It is currently 17 Jun 2019, 00:04

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

M04-30

  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: 55624
M04-30  [#permalink]

Show Tags

New post 16 Sep 2014, 00:23
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (00:24) correct 12% (00:26) wrong based on 159 sessions

HideShow timer Statistics

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 55624
M04-30  [#permalink]

Show Tags

New post 16 Sep 2014, 00:23
Official Solution:

If Mary bought only kiwis, bananas, and lemons at the grocery store in proportion of 1 : 4 : 7 accordingly, how many lemons did Mary buy?

Given: K:B:L=1:4:7. So, Mary bought \(x\) kiwis, \(4x\) bananas, and \(7x\) lemons, for some positive multiple \(x\).

(1) The total number of the fruits Mary bought is 24. Given: \(x+4x+7x=24\). Solving for \(x\) gives: \(x=2\), so \(L=7x=14\). Sufficient.

(2) Mary bought 8 bananas. Given: \(B=4x=8\). Solving for \(x\) gives: \(x=2\), so \(L=7x=14\). Sufficient.


Answer: D
_________________
Intern
Intern
avatar
Joined: 28 Apr 2014
Posts: 10
GMAT ToolKit User
Re: M04-30  [#permalink]

Show Tags

New post 08 Nov 2014, 03:57
1
how do we know that mary bought only kiwis, bananas, and lemons. She could have bought other fruits also. This would make 1 insufficient
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 55624
Re: M04-30  [#permalink]

Show Tags

New post 09 Nov 2014, 06:14
jacobneroth wrote:
how do we know that mary bought only kiwis, bananas, and lemons. She could have bought other fruits also. This would make 1 insufficient


Edited as suggested:
If Mary bought only kiwis, bananas, and lemons at the grocery store in proportion of 1 : 4 : 7 accordingly, how many lemons did Mary buy?

(1) The total number of the fruits Mary bought is 24.

(2) Mary bought 8 bananas.

Thank you.
_________________
Intern
Intern
avatar
Joined: 20 Jan 2013
Posts: 9
GMAT 1: 660 Q49 V30
Reviews Badge
Re: M04-30  [#permalink]

Show Tags

New post 25 Aug 2016, 04:39
If Mary bought only kiwis, bananas, and lemons at the grocery store in proportion of 1 : 4 : 7 accordingly, how many lemons did Mary buy?
(1) The total number of the fruits Mary bought is 24.
(2) Mary bought 8 bananas.

I have a question on statement 2:

The ratio given to us is 1:4:7. This ratio is also equal to 2:8:14. So, if Mary bought 8 bananas the propostionality constant can be either 1 or 2. (4*1=4 and 4*2=8) How can we be certain of the propotionality constant?
Director
Director
User avatar
V
Joined: 06 Jan 2015
Posts: 645
Location: India
Concentration: Operations, Finance
GPA: 3.35
WE: Information Technology (Computer Software)
Premium Member
Re: M04-30  [#permalink]

Show Tags

New post 18 Aug 2018, 19:01
HI pushpitkc, Bunuel, chetan2u,

Can you pls help with this query

Quote:
The ratio given to us is 1:4:7. This ratio is also equal to 2:8:14. So, if Mary bought 8 bananas the propostionality constant can be either 1 or 2. (4*1=4 and 4*2=8) How can we be certain of the propotionality constant?

_________________
आत्मनॊ मोक्षार्थम् जगद्धिताय च

Resource: GMATPrep RCs With Solution
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7743
Re: M04-30  [#permalink]

Show Tags

New post 18 Aug 2018, 20:01
NandishSS wrote:
HI pushpitkc, Bunuel, chetan2u,

Can you pls help with this query

Quote:
The ratio given to us is 1:4:7. This ratio is also equal to 2:8:14. So, if Mary bought 8 bananas the propostionality constant can be either 1 or 2. (4*1=4 and 4*2=8) How can we be certain of the propotionality constant?


Hi...
The proportionality constant can be just one...
If it is 1:4:7, then it is 1..
If it is 2:8:14, then it is 2, since 8=2*4..
Therefore here it is 2...
_________________
Intern
Intern
avatar
S
Joined: 05 Apr 2017
Posts: 14
GMAT 1: 730 Q49 V40
GMAT 2: 740 Q49 V41
GPA: 3.9
Reviews Badge CAT Tests
Re: M04-30  [#permalink]

Show Tags

New post 18 Jan 2019, 02:24
Just found out from this question that lemon is actually a fruit, always thought it was a vegetable.
GMAT Club Bot
Re: M04-30   [#permalink] 18 Jan 2019, 02:24
Display posts from previous: Sort by

M04-30

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

Moderators: chetan2u, Bunuel



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