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Studies of the rotational velocity of a galaxy at various distances fr

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Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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15 Oct 2015, 10:26
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Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

(A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of

(B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of

(C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of

(D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as

(E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of

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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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15 Oct 2015, 18:08
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GmatNirvanaSeeker wrote:
Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of

B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of

C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of

D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as

E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of

Subject of the sentence is "studies" so should contain plural "have" ... This crosses out C and D

In E, "galactic rotation" f*cks up the real meaning of the sentence ... Cross out

In A, pronoun "their" has ambiguous antecedent, "their" can not refer to "distances" .. Cross out... Could have been correct if pronoun "it" was used because then "it" will refer to "a galaxy" (singular)

In B, "their" unambiguously refers to "galaxies"

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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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15 Oct 2015, 23:11
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Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of

B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of

C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of

D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as

E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of[/quote]
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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25 Nov 2015, 02:43
GmatNirvanaSeeker wrote:
Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of

B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of

C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of

D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as

E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of

Does B not change meaning ? It confirms that 90% of the Universe is dark matter. Original sentence says - "Could exist" . This is an MGMAT CAT question.
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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25 Nov 2015, 03:05
9SidMn wrote:
Does B not change meaning ? It confirms that 90% of the Universe is dark matter. Original sentence says - "Could exist" . This is an MGMAT CAT question.

Yes it does, but unfortunately this the only option we are left with. If you can eliminate the other 4 answer choices based on grammar, do not think about meaning.

A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of
B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of
Correct
C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of
Studies needs a have, not "has"
D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as
Studies needs a have, not "has"
E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of
Studies have shown "that". Moreover, galactic rotation where did this come from.
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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25 Nov 2015, 09:19
It is clear that the studies have shown that ninety percent of the universe’s mass exists in the form of dark matter is a fact; why should then be a speculation still that it could exist?. The original carries a wrong conclusion. IMO, B corrects it. Even so, I would rather go with GMATIFY, that if grammar could be handy, then use it first.
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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20 Jan 2016, 12:14
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What a horrid question. All the answers are wrong. Even B, the OA is wrong because it completely changes the meaning of the sentences from "center of mass" to "center of rotation".
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Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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30 Jun 2017, 23:37
Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

(A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of - Should be galaxies ( because scientist proved a theory in general not for a single galaxy) also use of THEIR with singular noun is incorrect. 90% of mass is a singular group and should have singular verb- EXISTS

(B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of - Corrects all the above mentioned issues.

(C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of - Singular HAS does not go with STUDIES. Mass is not made up of DARK MATTER ( MASS EXISTS AS A DARK MATTER)

(D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as - Issues in only HAS verb ( refer earlier explanations). USE OF EXIST IS CORRECT HERE< BECAUSE OF THE USE OF MODAL VERB MIGHT ( modal verb always take plural form of verb)

(E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of- Though I removed this option based on fact that GMAT cannot expect people to is galactic rotation is same as normal rotaion ( mentioned in actual stem), you can remove this on the basis -

1) OVER the UNIVERSE makes no sense
2) EXIST is wrong- it should be exists
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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01 Jul 2017, 03:36
The subject is studies which is plural so C and D are out.
In a galaxy is singular so we need its but we have their so wrong choice.
We need That in E to make sense .
The answer is B
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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10 Jul 2017, 07:15
Isn't "as much as" redundency?

daagh wrote:
It is clear that the studies have shown that ninety percent of the universe’s mass exists in the form of dark matter is a fact; why should then be a speculation still that it could exist?. The original carries a wrong conclusion. IMO, B corrects it. Even so, I would rather go with GMATIFY, that if grammar could be handy, then use it first.
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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12 Jul 2017, 22:43
Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

(A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of

(B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of correct

(C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of

(D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as

(E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of
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Re: Studies of the rotational velocity of a galaxy at various distances fr  [#permalink]

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20 Sep 2018, 15:18
GmatNirvanaSeeker wrote:
Studies of the rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of dark matter.

(A) rotational velocity of a galaxy at various distances from their center of mass have shown that ninety percent of the universe’s mass could exist in the form of

(B) rotational velocity of galaxies at varying distances from their centers of rotation have shown that as much as ninety percent of the mass of the universe exists in the form of

(C) rotational velocity of galaxies at varying distances from their center of mass has shown that up to ninety percent of the mass of the universe is made of

(D) rotational velocity of galaxies at varying distances from their rotational centers has shown that as much as ninety percent of universal mass might exist as

(E) galactic rotation at various distances from the galactic center of rotation have shown up to ninety percent of the mass over the universe exist in the form of

Official Solution (Credit: Manhattan Prep)

The primary purpose of this sentence is to discuss the findings of a group of studies, namely, that much of the mass of the universe exists as dark matter. The main subject and verb of the sentence are therefore “Studies…have shown”. The findings of the study are described by the clause “that as much as…”, containing the subject-verb pairing “ninety percent…exists”.

(A) This sentence incorrectly uses the plural pronoun “their” to refer back to the singular antecedent “galaxy”.

(B) CORRECT. This sentence correctly matches both subject verb pairings.

(C) This sentence incorrectly pairs the singular verb phrase “has shown” with the plural noun “studies”.

(D) This sentence incorrectly pairs the singular verb phrase “has shown” with the plural noun “studies”.

(E) This sentence incorrectly pairs the singular subject “ninety percent” with the plural verb “exist”. Further, this sentence incorrectly states, “studies have shown up to ninety percent” (omitting the word “that” from the answer) implying that the studies themselves revealed ninety percent instead of revealing that ninety percent exists. In order to correctly pair the findings of the studies to the entire clause, the word “that” must be inserted.
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