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Rock samples taken from the remains of an asteroid about [#permalink]
 05 Aug 2012, 13:16
Question Stats:
58% (01:34) correct
41% (00:42) wrong based on 2 sessions
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 ) Same 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 Normally experts say estimated at should be followed by an noun e.g: the temperature is estimated at negative five hundred degrees and estimated to be should be followed by non nouns(such as adjectives) e.g the fossil is estimated to be 500 years old THEN WHY ARE WE CHOOSING E OVER C? VERBAL EXPERTS?
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
05 Aug 2012, 13:18
Quote: * "at" is a preposition.
* prepositions must be followed by nouns.
* "xxx number of years old" is not a noun.
so, wrong.
in the other example -- "temperatures estimated at xxxx degrees fahrenheit" -- there's no problem, because "xxxx degrees fahrenheit" is a noun.
i don't think anything else is happening here.
the OG explanations are wrong fairly regularly (though not in most cases); this is one of those times. This is what Ron Purewal of Manhattan GMAT has to say about estimated at/to be scenario Shouldn't the same logic apply to dated at/dated to be as well?
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
05 Aug 2012, 14:58
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 ) Same
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
Normally experts say
estimated at should be followed by an noun
e.g: the temperature is estimated at negative five hundred degrees
and estimated to be should be followed by non nouns(such as adjectives)
e.g the fossil is estimated to be 500 years old
THEN WHY ARE WE CHOOSING E OVER C?
VERBAL EXPERTS? I chose E bcs have been + dated +to be wont do .. Pls check the link -
http://www.manhattangmat.com/forums/dat ... -t604.htmlhere it gives C as option/answer !
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
05 Aug 2012, 21:07
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
06 Aug 2012, 02:43
souvik101990 wrote: i know it gives E
I am asking why!!
Why the discrepancy between estimated to be and dated to be? souvik, the link, discussion at MGMAT, conveys answer to be C! your OG answer says E ! the discrepancy is in two answers .. unless we know which one is correct - let have some expert comment, then only it is relevant to discuss 'estimated to be/dated to be ..'
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
06 Aug 2012, 03:28
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
06 Aug 2012, 07:06
souvik101990 wrote: yeah thats what i am trying
EXPERTS, EXPERTS WHERE ART THOU? kramacha1979 wrote: wrote:
Q1 ) Why E not C
the only difference between (c) and (e) is idiomatic expression.
you don't say "dated to be..."; you do say "dated at...".
like other idiomatic expressions, this is one of those things that doesn't go according to any sort of logical rule; you just have to know it.
you should dedicate a page or two of a notebook to this, or make some flash cards for the ones you don't know. This is what Ron has to say about DATED AT & DATED TO BE. The rule is applicable with other expression with other expressions like ESTIMATED or ESTIMATED TO BE. HTH
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
06 Aug 2012, 07:09
jaiswalamrita wrote: souvik101990 wrote: yeah thats what i am trying
EXPERTS, EXPERTS WHERE ART THOU? kramacha1979 wrote: wrote:
Q1 ) Why E not C
the only difference between (c) and (e) is idiomatic expression.
you don't say "dated to be..."; you do say "dated at...".
like other idiomatic expressions, this is one of those things that doesn't go according to any sort of logical rule; you just have to know it.
you should dedicate a page or two of a notebook to this, or make some flash cards for the ones you don't know. This is what Ron has to say about DATED AT & DATED TO BE. The rule is applicable with other expression with other expressions like ESTIMATED or ESTIMATED TO BE. HTH din get what you said Ron said that estimated at should be followed by a noun for other cases we use estimated to be and og says dated to be 300 million years old. this is my confusion.
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
06 Aug 2012, 11:17
souvik101990 wrote: jaiswalamrita wrote: souvik101990 wrote: yeah thats what i am trying
EXPERTS, EXPERTS WHERE ART THOU? kramacha1979 wrote: wrote:
Q1 ) Why E not C
the only difference between (c) and (e) is idiomatic expression.
you don't say "dated to be..."; you do say "dated at...".
like other idiomatic expressions, this is one of those things that doesn't go according to any sort of logical rule; you just have to know it.
you should dedicate a page or two of a notebook to this, or make some flash cards for the ones you don't know. This is what Ron has to say about DATED AT & DATED TO BE. The rule is applicable with other expression with other expressions like ESTIMATED or ESTIMATED TO BE. HTH din get what you said Ron said that estimated at should be followed by a noun for other cases we use estimated to be and og says dated to be 300 million years old. this is my confusion. Ok...He says.. 'Estimated at' should be followed by a noun because it follows a preposition 'at' which always takes Noun. Eg. This monument is estimated at 300 mn years. If we say 'This monument is estimated at 300 mn years old' then its wrong because '300 mn year old' is an adjective whereas '300 mn year' is noun. In any case if we have to use '300 mn years old', we'll say 'This monument is estimated to be 300 mn years old'. He further says this rule is not applicable to 'Dated at' and 'Dated to be' because 'Dated to be' is non idiomatic..It doesn't work, I means natives do not use 'dated to be' anywhere. Hence 'Dated to be' is always wrong irrespective of what it follows (a noun or an adjective). HTH
Last edited by jaiswalamrita on 06 Aug 2012, 11:20, edited 1 time in total.
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MBA Section Director
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Re: ESTIMATED TO BE/ESTIMATED AT VS DATED TO BE/DATED AT [#permalink]
06 Aug 2012, 11:19
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Re: Rock samples taken from the remains of an asteroid about [#permalink]
27 Dec 2012, 22:57
I picked C because I thought
"to be" is the correct idiom.
I swear to god I saw in the OG somewhere else say that the correct idiom is
"estimated to be"
But apparently when the word is "dated" it should be
"dated at"
according to the explanation given for this question
can anyone provide some definitive clarity here?
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Re: Rock samples taken from the remains of an asteroid about [#permalink]
03 Jan 2013, 17:24
Is this really a 700 level ques? Answer is claerly E - Rock samples goes with Have and Dated At is the correct Idiom!!
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Re: Rock samples taken from the remains of an asteroid about [#permalink]
15 Jan 2013, 04:17
dated at
estimated to be
go witn NON noun such as
24 years old
estimated at
goes with noun such as
72 degree C.
estimated at 72 degree C
appear in gmatprep.
in beatthegmat forum, Ron said this clearly. pls find the discution in that forum and confirm my thinking
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Re: Rock samples taken from the remains of an asteroid about [#permalink]
28 Mar 2013, 08:28
isnt the Idiom somehing like this- ESTIMATED TO BE. DATED AT. Are there instances where these rules have been violated??? Can you provide the link in beat the GMAT.
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Re: Rock samples taken from the remains of an asteroid about
[#permalink]
28 Mar 2013, 08:28
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