It is currently 20 Oct 2017, 07:56

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

Events & Promotions in June
Open Detailed Calendar

Rock samples taken from the remains of an asteroid about twice the siz

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
MBA Section Director
User avatar
P
Joined: 19 Mar 2012
Posts: 4484

Kudos [?]: 17016 [0], given: 1963

Location: India
GMAT 1: 760 Q50 V42
GPA: 3.8
WE: Marketing (Non-Profit and Government)
Re: Rock samples taken from the remains of an asteroid about twice the siz [#permalink]

Show Tags

New post 22 Sep 2012, 13:42
methevoid wrote:
souvik101990 wrote:
Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.

(A) has been dated to be 3.47 billion years old and thus is
(B) has been dated at 3.47 billion years old and thus
(C) have been dated to be 3.47 billion years old and thus are
(D) have been dated as being 3.47 billion years old and thus
(E) have been dated at 3.47 billion years old and thus are


As rightly written by @Archillees - SV Agreement error >

Also to note is Difference between C and E
C uses subjunctive form - "to be" which is not required here.
E uses correct idiom "dated at"


Hey,
"to be" is neither used as a command subjunctive nor used as a hypothetical subjunctive.
For them you need special command verbs like demand, order, require etc.
They are popularly known as "bossy verbs"
Hypothetical subjunctive, as the name suggests, uses hypothetical constructions such as "were", "would" etc.

Souvik
_________________

My GMAT Resources
V30-V40: How to do it! | GMATPrep SC | GMATPrep CR | GMATPrep RC | Critical Reasoning Megathread | CR: Numbers and Statistics | CR: Weaken | CR: Strengthen | CR: Assumption | SC: Modifier | SC: Meaning | SC: SV Agreement | RC: Primary Purpose | PS/DS: Numbers and Inequalities | PS/DS: Combinatorics and Coordinates

My MBA Resources
Everything about the MBA Application | Over-Represented MBA woes | Fit Vs Rankings | Low GPA: What you can do | Letter of Recommendation: The Guide | Indian B Schools accepting GMAT score | Why MBA?

My Reviews
Veritas Prep Live Online

Kudos [?]: 17016 [0], given: 1963

Expert Post
MBA Section Director
User avatar
P
Joined: 19 Mar 2012
Posts: 4484

Kudos [?]: 17016 [0], given: 1963

Location: India
GMAT 1: 760 Q50 V42
GPA: 3.8
WE: Marketing (Non-Profit and Government)
Re: Rock samples taken from the remains of an asteroid about twice the siz [#permalink]

Show Tags

New post 22 Sep 2012, 15:51
Archit143 wrote:
Hey Souvik
Your reply was really nice one but couldnt get it can you explain in simpler terms i know what you have explained is simple, but i did not get that

Hey Archit,
Welcome to gmatclub.
Now before me going on with what you asked for, can you explain what you didn't understand?
If you didn't understand the command or hypothetical subjunctive, then I could break it down for you.

Go through the MGMAT SC for subjunctive and also this particular article.
If you are still having issues, come back here and I would be happy to help you out.

http://gmat-grammar.blogspot.in/2006/06 ... verbs.html
_________________

My GMAT Resources
V30-V40: How to do it! | GMATPrep SC | GMATPrep CR | GMATPrep RC | Critical Reasoning Megathread | CR: Numbers and Statistics | CR: Weaken | CR: Strengthen | CR: Assumption | SC: Modifier | SC: Meaning | SC: SV Agreement | RC: Primary Purpose | PS/DS: Numbers and Inequalities | PS/DS: Combinatorics and Coordinates

My MBA Resources
Everything about the MBA Application | Over-Represented MBA woes | Fit Vs Rankings | Low GPA: What you can do | Letter of Recommendation: The Guide | Indian B Schools accepting GMAT score | Why MBA?

My Reviews
Veritas Prep Live Online

Kudos [?]: 17016 [0], given: 1963

Expert Post
1 KUDOS received
MBA Section Director
User avatar
P
Joined: 19 Mar 2012
Posts: 4484

Kudos [?]: 17016 [1], given: 1963

Location: India
GMAT 1: 760 Q50 V42
GPA: 3.8
WE: Marketing (Non-Profit and Government)
Re: Rock samples taken from the remains of an asteroid about twice the siz [#permalink]

Show Tags

New post 10 Oct 2012, 00:34
1
This post received
KUDOS
Expert's post
Concept tested: Idioms, SV agreement
Difficulty Level: Moderate
Illustration: “Rock samples” is the subject for the verb “has been dated”. Rock samples must take a plural verb.
So A and B can be instantly eliminated.
Dated at is the correct idiomatic construction.
So C and D are also eliminated
E is the correct answer choice

Tip: Though “dated at” is preferred to “dated to be”, the same construction is not necessarily true for “estimated at” and “estimated to be” construction.
“Estimated at” should be followed by a noun because “at” is a preposition.
E.g: The molten iron is estimated at 1500 degrees Celsius.
“Estimated to be” generally follows phrases
E.g: The fossil is estimated to be 1000 years old.

This is NOT a specific English rule, but the way GMAT wants things to be
Support is given by:
In OG 12, Q 27 of SC, it says that the correct idiom is "estimated to be".
However this question appears in gmatprep
"With surface temperatures estimated at minus 230 degrees Farenheit, Jupiter's moon Europa has long been considered far too cold to support life, and with 60 square miles of water though to be frozen from top to bottom."

We can see from the non underlined part that "estimated at" is also as correct idiom.
Takeaway: Same rules do not apply to "estimated to be" and "dated to be"
_________________

My GMAT Resources
V30-V40: How to do it! | GMATPrep SC | GMATPrep CR | GMATPrep RC | Critical Reasoning Megathread | CR: Numbers and Statistics | CR: Weaken | CR: Strengthen | CR: Assumption | SC: Modifier | SC: Meaning | SC: SV Agreement | RC: Primary Purpose | PS/DS: Numbers and Inequalities | PS/DS: Combinatorics and Coordinates

My MBA Resources
Everything about the MBA Application | Over-Represented MBA woes | Fit Vs Rankings | Low GPA: What you can do | Letter of Recommendation: The Guide | Indian B Schools accepting GMAT score | Why MBA?

My Reviews
Veritas Prep Live Online

Kudos [?]: 17016 [1], given: 1963

Manager
Manager
avatar
Status: Bouncing back from failure
Joined: 08 Mar 2010
Posts: 105

Kudos [?]: 18 [0], given: 36

Schools: Wharton,MIT, Tepper, Kelly,
WE 1: 7 years- Service Managament, poject Management, Business Consultant- Retail
Premium Member Reviews Badge
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 18 Sep 2013, 01:58
dvinoth86 wrote:
sravanth wrote:
Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.

(A) has been dated to be 3.47 billion years old and thus is
(B) has been dated at 3.47 billion years old and thus
(C) have been dated to be 3.47 billion years old and thus are
(D) have been dated as being 3.47 billion years old and thus
(E) have been dated at 3.47 billion years old and thus are



Rock samples ---> plural subject. hence has been is incorrect and have been in correct.
Eliminate A and B.

Dated at is the correct idiom. hence E.


Removing all the flabs i.e. here is the main sentence.

Rock samples ....[taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid tha......]has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth

Rock samples is plural subject hence , 'Have' & 'are' required, dated to be - incorrect idiom usage.
Hence A, B eliminated
C Dated to be is wron indiom
D verb is missing

E - corrects Sub- verb agreement error and Idiom usage

Concept tested : SVA, IDIOM

Kudos [?]: 18 [0], given: 36

1 KUDOS received
Verbal Forum Moderator
Verbal Forum Moderator
User avatar
Status: Getting strong now, I'm so strong now!!!
Affiliations: National Institute of Technology, Durgapur
Joined: 04 Jun 2013
Posts: 565

Kudos [?]: 694 [1], given: 80

Location: India
GPA: 3.32
WE: Information Technology (Computer Software)
GMAT ToolKit User Premium Member Reviews Badge
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 26 Sep 2013, 10:42
1
This post received
KUDOS
Bumping for review and further discussion*.

*New project from GMAT Club!!! Check HERE


_________________

Regards,

S

Consider +1 KUDOS if you find this post useful

Kudos [?]: 694 [1], given: 80

Manager
Manager
User avatar
B
Status: Applying
Joined: 01 Dec 2012
Posts: 91

Kudos [?]: 89 [0], given: 67

Location: United States (OH)
Concentration: Strategy, Entrepreneurship
GMAT 1: 750 Q50 V42
GPA: 2.9
WE: Consulting (Consulting)
Re: Rock samples taken from the remains of an asteroid [#permalink]

Show Tags

New post 07 Oct 2013, 12:29
Hi!

I'd like to point out a few things in the above Question/piece and hopefully answer your thoughts along the way :-

1) The quoted text is not "wholy" a modifier; The non-bold part is the modifier while the bold part, as you can see, is the actual verb of the above stem
Quote:
about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old

2) Again, the above bold part of the stem is incorrect in its given state - "Rock Samples.." + "has been dated" --> Plural noun & singular verb ERROR

3) Somewhere in the GMAT SC portions, I've come across this point of WISDOM that GMAT test makers generally do not test the punctultion and other stuff (commas, etc) and only test the "semi-colon" " ;" if at all

I hope I've shed some insight!
_________________

Regards,
Vishnu

Article --> http://www.topmba.com/blog/could-mba-degree-be-way-forward

Kudos [?]: 89 [0], given: 67

Expert Post
e-GMAT Representative
User avatar
S
Joined: 02 Nov 2011
Posts: 2311

Kudos [?]: 9041 [0], given: 335

Re: Rock samples taken from the remains of an asteroid [#permalink]

Show Tags

New post 11 Oct 2013, 07:55
Mission2012 wrote:
Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.

The modifier in bold red it modifying - remains of asteroid or asteroid. Also is this modified "adjective phase". If so should it have a comma before it or not?


Hi, :)

Note that the highlighted portion doesn’t entirely consist of a single modifier.

I suggest you analyze the sentence structure to understand the role played by each element.

    Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid
      o that eradicated the dinosaurs
    has been dated to be 3.47 billion years old and
    thus is evidence of the earliest known asteroid impact on Earth.

The highlighted modifier presents a comparison with another “asteroid”.

So it would be logical to presume that the entire modifier is modifying “asteroid”, not “remains”.

Since this modifier is used to modify a noun, we can call it a “Noun Modifier”.

Observe that the modifier is in the non-underlined portion of the official sentence and so it should be correct as such.

Of course, enclosing it in a comma pair won’t make it incorrect. However, it would be unnecessary.

Hope this helps! :)

Regards,
Krishna
_________________












| '4 out of Top 5' Instructors on gmatclub | 70 point improvement guarantee | www.e-gmat.com

Kudos [?]: 9041 [0], given: 335

1 KUDOS received
Intern
Intern
avatar
Joined: 06 Oct 2012
Posts: 17

Kudos [?]: 14 [1], given: 5

Concentration: Strategy, Other
GMAT Date: 06-24-2013
Reviews Badge
Re: Rock samples taken from the remains of an asteroid [#permalink]

Show Tags

New post 12 Oct 2013, 21:28
1
This post received
KUDOS
egmat wrote:
Mission2012 wrote:
Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.

The modifier in bold red it modifying - remains of asteroid or asteroid. Also is this modified "adjective phase". If so should it have a comma before it or not?


Hi, :)

Note that the highlighted portion doesn’t entirely consist of a single modifier.

I suggest you analyze the sentence structure to understand the role played by each element.

    Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid
      o that eradicated the dinosaurs
    has been dated to be 3.47 billion years old and
    thus is evidence of the earliest known asteroid impact on Earth.

The highlighted modifier presents a comparison with another “asteroid”.

So it would be logical to presume that the entire modifier is modifying “asteroid”, not “remains”.

Since this modifier is used to modify a noun, we can call it a “Noun Modifier”.

Observe that the modifier is in the non-underlined portion of the official sentence and so it should be correct as such.

Of course, enclosing it in a comma pair won’t make it incorrect. However, it would be unnecessary.

Hope this helps! :)

Regards,
Krishna


Hi Krishna,
Thanks for insightful reply.

Could you please assess my structural analysis of the sentence -
"Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth."

As there is a comprison is this sentence between two asteroid, i have marked two asteroids as asteroid 1 and asteroid 2.

Rock samples - Subject
taken from the remains of an asteroid1 - Noun modifier (type past participle) modifying Rock samples
about twice the size of the 6-mile-wide asteroid2 - Noun modifier modifying asteroid1
that eradicated the dinosaurs - Noun modifier modifying asteroid 2
has been dated to be (verb)
3.7 billion years old (object)
and thus (coordinator)
is (linking verb)
evidence of the earliest known asteroid impact on Earth (subject)

Kudos [?]: 14 [1], given: 5

Intern
Intern
avatar
Joined: 11 Oct 2013
Posts: 32

Kudos [?]: 1 [0], given: 3

Re: Rock samples taken from the remains of an asteroid [#permalink]

Show Tags

New post 12 Oct 2013, 23:37
Confused..should it not be: "have been dated" and thus "are evidence", since the subject seems to be rock samples, which is plural.

Kudos [?]: 1 [0], given: 3

Manager
Manager
User avatar
Joined: 16 Jan 2013
Posts: 176

Kudos [?]: 413 [0], given: 56

Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 06 Jan 2014, 05:42
ardhenduchasing wrote:
Appreciate if anybody can please suggest me the source of most comprehensive Idiom list.
Somehow I have got lot of lists but not sure which one is best suited

Thanks


GMAC has moved away from testing SC solely on the basis of idioms. But still, you can go through the lists (no harm)

Please complete the below one and then proceed to others.

http://magoosh.com/gmat/2013/gmat-idiom-ebook/

gmat-idioms-comprehensive-list-of-gmat-idioms-80342.html
_________________

Read my posts...
What are modifiers ??

Kudos [?]: 413 [0], given: 56

Manager
Manager
User avatar
Joined: 05 Jun 2012
Posts: 107

Kudos [?]: 16 [0], given: 66

Schools: IIMA
GMAT ToolKit User
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 13 Jul 2014, 23:55
Rock samples -subject so have

"dated at" is correct idiom so E is good :)
_________________

If you are not over prepared then you are under prepared !!!

Kudos [?]: 16 [0], given: 66

Intern
Intern
avatar
Joined: 14 Jul 2014
Posts: 6

Kudos [?]: 1 [0], given: 0

Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 14 Jul 2014, 02:29
The correct idiom is 'dated at.

Kudos [?]: 1 [0], given: 0

NUS Thread Master
User avatar
Affiliations: Oracle certified java programmer , adobe certified developer
Joined: 14 Jul 2013
Posts: 119

Kudos [?]: 26 [0], given: 37

GMAT Date: 02-12-2015
GPA: 3.87
WE: Programming (Telecommunications)
Re: Rock samples taken from the remains of an asteroid about twice the siz [#permalink]

Show Tags

New post 01 Sep 2014, 20:58
A,B,D out for singular "is" for samples.
C out for "dated to be idiom"
E - dated at - correct usage and OA .
Hope it helps :)
_________________

IF IT IS TO BE , IT IS UP TO ME

Kudos [?]: 26 [0], given: 37

NUS Thread Master
User avatar
Affiliations: Oracle certified java programmer , adobe certified developer
Joined: 14 Jul 2013
Posts: 119

Kudos [?]: 26 [0], given: 37

GMAT Date: 02-12-2015
GPA: 3.87
WE: Programming (Telecommunications)
Re: Rock samples taken from the remains of an asteroid about twice the siz [#permalink]

Show Tags

New post 10 Oct 2014, 21:39
(A) has beendated to be 3.47 billion years old and thus is - Singular usage
(B) has beendated at 3.47 billion years old and thus - Singular usage
(C) have beendated to be3.47 billion years old and thus are - Not so correct
(D) have been datedas being 3.47 billion years old and thus - usage of being wrong
(E) have beendated at 3.47 billion years old and thus are - correct usage - dated at
_________________

IF IT IS TO BE , IT IS UP TO ME

Kudos [?]: 26 [0], given: 37

Intern
Intern
avatar
Joined: 20 Sep 2014
Posts: 9

Kudos [?]: 3 [0], given: 49

Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 04 Dec 2014, 13:12
Please Help !! (Kudos for clear reply)

I am very confused on the usage of the idiom DATED AT vs DATED TO BE,

Although, i thought that DATED AT was prefered on the Gmat, I've seen both of them as right answer !!!(see link from gmatprep test2 qn 2)
I am a non native and it confuses me,
Is there a tip to choose correctly beetween the two ?
Do you have any link to an discussion, expert explanation, or else on that ?

Thank you very much !
Quentin

Kudos [?]: 3 [0], given: 49

Senior Manager
Senior Manager
User avatar
B
Joined: 01 Nov 2013
Posts: 344

Kudos [?]: 226 [0], given: 403

GMAT 1: 690 Q45 V39
WE: General Management (Energy and Utilities)
Reviews Badge
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 01 Mar 2015, 23:59
Dated at is the correct idiom.

Wish dated at was replaced with estimated to be... :) :)
_________________

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.

I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.-Mohammad Ali

Kudos [?]: 226 [0], given: 403

Manager
Manager
avatar
Joined: 25 Jan 2015
Posts: 121

Kudos [?]: 47 [0], given: 260

Location: United States
GMAT 1: 730 Q49 V41
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 18 Mar 2015, 13:32
OG explanation for choice C says: ' the conjunction and thus should be followed by a verb'.

I am wondering why do we necessarily need a verb after 'and thus'. Can't we think of 'have been' as the verb of the 'and thus'?!

... have been dated at ... and thus [have been: implied] evidence

Is there also a tense problem?

Kudos [?]: 47 [0], given: 260

Manager
Manager
avatar
Joined: 15 Jan 2014
Posts: 64

Kudos [?]: 5 [0], given: 12

GMAT 1: 720 Q51 V38
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 19 Mar 2015, 03:43
apolo wrote:
OG explanation for choice C says: ' the conjunction and thus should be followed by a verb'.

I think you are referring to choice B, because choice C already has a verb "are" after "thus"

Quote:
I am wondering why do we necessarily need a verb after 'and thus'. Can't we think of 'have been' as the verb of the 'and thus'?!

... have been dated at ... and thus [have been: implied] evidence

Is there also a tense problem?

Yes, I believe that in that case there would indeed be a tense problem, because we need to use "simple present", since this is applicable even now, because these "rock samples" still "are" evidence of the earliest known asteroid impact on Earth.

Kudos [?]: 5 [0], given: 12

Manager
Manager
avatar
Joined: 25 Jan 2015
Posts: 121

Kudos [?]: 47 [0], given: 260

Location: United States
GMAT 1: 730 Q49 V41
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 19 Mar 2015, 04:30
VerbalHow wrote:
apolo wrote:
OG explanation for choice C says: ' the conjunction and thus should be followed by a verb'.

I think you are referring to choice B, because choice C already has a verb "are" after "thus"

Quote:
I am wondering why do we necessarily need a verb after 'and thus'. Can't we think of 'have been' as the verb of the 'and thus'?!

... have been dated at ... and thus [have been: implied] evidence

Is there also a tense problem?

Yes, I believe that in that case there would indeed be a tense problem, because we need to use "simple present", since this is applicable even now, because these "rock samples" still "are" evidence of the earliest known asteroid impact on Earth.


Sorry. Actually I am referring to Choice D, which has the plural verb.

Apart from tense problem, OG says that we need a verb. But why 'have been' can not perform as the verb for this part? Perhaps because then the whole verb ' have been dated' should be the implied verb for the second part. :?:

Kudos [?]: 47 [0], given: 260

Manager
Manager
avatar
Joined: 15 Jan 2014
Posts: 64

Kudos [?]: 5 [0], given: 12

GMAT 1: 720 Q51 V38
Re: Rock samples taken from the remains of an asteroid about [#permalink]

Show Tags

New post 19 Mar 2015, 06:24
apolo wrote:
Sorry. Actually I am referring to Choice D, which has the plural verb.

Apart from tense problem, OG says that we need a verb. But why 'have been' can not perform as the verb for this part? Perhaps because then the whole verb ' have been dated' should be the implied verb for the second part. :?:

Same thing. "have been evidence" would be present perfect and incorrect here. It should be simple present ("are").

Kudos [?]: 5 [0], given: 12

Re: Rock samples taken from the remains of an asteroid about   [#permalink] 19 Mar 2015, 06:24

Go to page   Previous    1   2   3   4    Next  [ 64 posts ] 

Display posts from previous: Sort by

Rock samples taken from the remains of an asteroid about twice the siz

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


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.