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An automobile’s transmission allows for both wheel rotation rates lowe

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An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 19:43
3
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A
B
C
D
E

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An automobile’s transmission allows for both wheel rotation rates lower than the engine and for higher torque at lower speeds.

A. for both wheel rotation rates lower than the engine and for higher torque
B. for both wheel rotation rates that are lower than that of the engine and for higher torque
C. both for wheel rotation rates lower than that of the engine and for higher torque
D. both the wheels to turn more slowly than that of the engine and the torque to be higher
E. both a rate of wheel rotation lower than the engine and higher torques

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 19:53
1
+1 for C

Split 1:
Idiom used Both X and Y. X and Y must be parallel.
Only C and D maintain the above I.e., Both for X and for Y
Hence, eliminate A, B, E

Between C and D, option D changes the meaning by bringing in new information. Hence, eliminate D.

Option C is our winner

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 19:59
C does not have a clear referent for "that"

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An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 20:16
rahulkashyap wrote:
C does not have a clear referent for "that"

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In C, 'that' refers to Rotation rates, same as D.
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 20:28
Rates is plural and would thus need "those"

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 20:40
An automobile’s transmission allows for both wheel rotation rates lower than the engine and for higher torque at lower speeds.

A. for both wheel rotation rates lower than the engine and for higher torque - both is misplaced

B. for both wheel rotation rates that are lower than that of the engine and for higher torque - same as A and also changes the meaning of the sentence
C. both for wheel rotation rates lower than that of the engine and for higher torque - both X and Y
D. both the wheels to turn more slowly than that of the engine and the torque to be higher - both is correctly used but changes the meaning of the sentence
E. both a rate of wheel rotation lower than the engine and higher torques -both a rate is incorrect and not parallel

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An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 20:49
rahulkashyap wrote:
Rates is plural and would thus need "those"

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Looks like D can be the best possible answer.

I eliminated D because it changed the sentence, but the meaning stays the same.But still I'm not 100% convinced. Let's wait for the OA and OE
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 21:10
chetan2u could you help with this

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An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post Updated on: 14 Sep 2018, 22:00
Here is a hint guys - Sometime Parallelism need a word to make sure that with what part parallelism starts. if not, multiple such case of parallelism can exist and that makes the whole thing complex. Many gmat OG questions have such options. e.i. I have seen 'That' in many case needed just for this. All I am saying is you can not drop every thing to make sentence concise.

Akash720 - good job at first explanation. Why you think there is a meaning difference between C and D. You should elaborate on these points. How about you try one more time?
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Originally posted by aragonn on 14 Sep 2018, 21:29.
Last edited by aragonn on 14 Sep 2018, 22:00, edited 1 time in total.
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 21:39
aragonn wrote:
Here is a hint guys - Sometime Parallelism need a word to make sure that with what part parallelism starts. if not, multiple such case of parallelism can exist and that makes the whole thing complex. Many gmat OG questions have such options. I have seen 'That' in many case needed just for this. All I am saying is you can not drop every thing to make sentence concise.

Akash720 - good job at first explanation. Why you think there is a meaning difference between C and D. You should elaborate on these points. How about you try one more time?


What exactly is the usage of "that" in the options? I'm not able to understand the usage behind it in this question

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:05
aragonn wrote:
An automobile’s transmission allows for both wheel rotation rates lower than the engine and for higher torque at lower speeds.

A. for both wheel rotation rates lower than the engine and for higher torque
B. for both wheel rotation rates that are lower than that of the engine and for higher torque
C. both for wheel rotation rates lower than that of the engine and for higher torque
D. both the wheels to turn more slowly than that of the engine and the torque to be higher
E. both a rate of wheel rotation lower than the engine and higher torques


rahulkashyap..

errors..
1) ALLOW FOR ;- correct idiom is allow for and means plan for .. so the automobiles transmission caters/plans for ...
2) BOTH x AND y :- correct idiom ... x and y should be parallel
3) COMPARISON :- rotation rate of wheel with rotation rate of engine.. THAT stands for rotation rate

C
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An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:06
aragonn wrote:
Akash720 - good job at first explanation. Why you think there is a meaning difference between C and D. You should elaborate on these points. How about you try one more time?


Option D is far far away from C to be correct in terms of meaning.

Thanks aragonn

C. both for wheel rotation rates lower than that of the engine and for higher torque
Meaning:
Its clear that an automobile’s transmission allows two things here.
(i) wheel rotation rates lower than that of the engine
(ii) higher torque at lower speeds.

D. both the wheels to turn more slowly than that of the engine and the torque to be higher
Meaning:
Here the sentence says - "both the wheels turn more slowly", meaning an automobile’s transmission allows only one thing here i.e., "both the wheels to turn more slowly than that of the engine". Both X and Y idiom is not in action here, its talking about both wheels. The second part " the torque to be higher" is something else. Hence not parallel.

Hope this is clear now.
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:14
aragonn wrote:
An automobile’s transmission allows for both wheel rotation rates lower than the engine and for higher torque at lower speeds.

A. for both wheel rotation rates lower than the engine and for higher torque
B. for both wheel rotation rates that are lower than that of the engine and for higher torque
C. both for wheel rotation rates lower than that of the engine and for higher torque
D. both the wheels to turn more slowly than that of the engine and the torque to be higher
E. both a rate of wheel rotation lower than the engine and higher torques


A, B, and E are out because they are not parallel. C and D perfectly parallel.
D is incorrect because of a major reason that it changes the meaning - both the wheels to turn.. and the torque...
both the wheels to turn more slowly means that the transmission allows 'both wheels of the car' to turn more slowly. This doesn't make sense and definitely changes the intended meaning. Also, allows...for is the correct usage.
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:15
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Exactly my friend. Keep your base solid and don't change it unless you have to. I saw you were right at first instance then some how you got distracted. Hope it was a good learning for you.
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:17
chetan2u wrote:
aragonn wrote:
An automobile’s transmission allows for both wheel rotation rates lower than the engine and for higher torque at lower speeds.

A. for both wheel rotation rates lower than the engine and for higher torque
B. for both wheel rotation rates that are lower than that of the engine and for higher torque
C. both for wheel rotation rates lower than that of the engine and for higher torque
D. both the wheels to turn more slowly than that of the engine and the torque to be higher
E. both a rate of wheel rotation lower than the engine and higher torques


rahulkashyap..

errors..
1) ALLOW FOR ;- correct idiom is allow for and means plan for .. so the automobiles transmission caters/plans for ...
2) BOTH x AND y :- correct idiom ... x and y should be parallel
3) COMPARISON :- rotation rate of wheel with rotation rate of engine.. THAT stands for rotation rate

C


Hi chetan2u as far as I know if a plural exists before, in this case "rates", you need a plural pronoun and not a singular - that. Can you please clear this point? There is no "rate" in option c

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:21
for both wheel rotation rates - 1 wheel has one rotation rate at one time, what both have will be plural.
An engine has one rotation rate at one time.
So it is singular. just some twisted meaning.
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An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:29
aragonn wrote:
for both wheel rotation rates - 1 wheel has one rotation rate at one time, what both have will be plural.
An engine has one rotation rate at one time.
So it is singular. just some twisted meaning.


Hi aragonn I understand what the meaning is meant to be. But what I mean is grammatically, to use "that" you need a singular referent previously. We do not have a singular "rate" present in the statement.

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:33
If i understand it correctly, you are saying "Those of engines" is the correct phrase here.
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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 14 Sep 2018, 22:39
That is correct or the other way is if it said "wheel rotation rate" because then "that" would make sense with this singular phrase "rotation rate"

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Re: An automobile’s transmission allows for both wheel rotation rates lowe  [#permalink]

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New post 15 Sep 2018, 19:56

Official Explanation


A question about an automobile’s transmission system.

Split #1: idiom

The verb “allow,” by itself, means to give permission. The subject could be a human being (or a governmental body) who is in position to grant permission.

The teachers allows student to chew gum in class.

The law does not allow car drivers to talk on the phone.

The subject also could be something inanimate, perhaps mechanical: here, it would not be about “permission,” but about accommodating a possible range, as of motion, within the mechanical tolerance of the construction. In this construction, we also need the infinite: allow X to do Y. This is the structure that choice (D) has.

The idiomatic structure “allow for” is used only for inanimate objects, primarily mechanical objects: it also indicates a possible range.

Amphibious vehicles allow for travel on both land and water.

The human shoulder joint allows for 360° rotation in a vertical plane.
In this SC question, we are discussion an “automobile’s transmission,” an inanimate mechanical object. We could use this second idiom, “allow for.” Choice (A) & (B) & (C) make this choice.

Choice (E) doesn’t follow either pattern correctly and is idiomatically incorrect.

Split #2: the Inside/Outside rule

One important rule about parallelism is the Once Outside, Twice Inside rule. This rule comes into effect when we have correlated conjunctions—that is, a coupled pair of conjunctions marking the two halves of the parallelism: examples include “both X and Y,” “neither X nor Y,” “not X but Y,” and “not only X but also Y.” When any of these are used, the parallelism has a clear start at the beginning of the first word. Anything that is within the “both X and Y” structure is “inside,” and anything that comes before or after it is “outside.” Now, suppose a preposition applies to words in both branches of the parallelism. We have two options:

Once Outside: to both X and Y

Twice Inside: both to X and to Y

In this question, we could have

Once Outside: allow for both X and Y

Twice Inside: allow both for X and for Y

Choice (A) & (B) have the mistake pattern, once-outside-and-once-inside. Both of those are incorrect.

Choice (D) has an incorrect comparison: “allows … the wheels to turn more slowly than that of the engine.” The antecedent of the pronoun “that” is the action of the verb “to turn more slowly.” A pronoun can have the action of a verb as its antecedent. This choice is incorrect.

The only possible choice is (C).
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Re: An automobile’s transmission allows for both wheel rotation rates lowe &nbs [#permalink] 15 Sep 2018, 19:56
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