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According to a study published by Dr. Myrna Weissman, only

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According to a study published by Dr. Myrna Weissman, only [#permalink] New post 11 Jul 2009, 20:02
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41. According to a study published by Dr. Myrna Weissman, only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four.

(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four

(B) only one percent of Americans born before 1905 suffer major depression by the age of seventy-five; if they are born since 1955, six percent become depressed by age twenty-four

(C) of Americans born before 1905, only one percent of them have suffered major depression by age seventy-five, but six percent of those born since 1955 do by the age of twenty-four

(D) major depression is suffered by the age of seventy-five by only one percent of Americans born before 1905, and by age twenty-four by the six percent born since 1955

(E) Americans born before 1905 suffer major depression by the age of seventy-five only one percent of the time, but six percent of those born since 1955 did so by age twenty-four
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Re: SC 41/1000 [#permalink] New post 22 Jul 2011, 08:18
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41. According to a study published by Dr. Myrna Weissman, only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four.(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four

Two concepts. 1. Use of semi colon 2. Use of past perfect tense.
Semi colon - Used with two independent clause which should be related to each other.
Past Perfect tense - Started with one point of time in past and should be continuous till another time of past, or its effect should remain till that time.

First let's analyze all options except A.
(B) only one percent of Americans born before 1905 suffer major depression by the age of seventy-five; if they are born since 1955, six percent become depressed by age twenty-four
1. First problem is with tense.
"Suffer" represent present tense so can not refer past.
This has to be in perfect tense because those 1% of americand were still suffering after age of seventy-five
2. Second problem is with Pronoun.
Here "if they are born" referring to the same people "one percent of Americans" but as mentioned later in sentence that now the number is 6% and these people or this group is different from "one percent of Americans".

(C) of Americans born before 1905, only one percent of them have suffered major depression by age seventy-five, but six percent of those born since 1955 do by the age of twenty-four
1. GMAT perfer they in place of them.
2. "Have suffered" means those people are still suffering

(D) major depression is suffered by the age of seventy-five by only one percent of Americans born before 1905, and by age twenty-four by the six percent born since 1955
1. Here first cluase is passive construction ( by x); Suffer is intrasitive verb so we can not have passive sentence with it, or in another words, Major depression can not be suffered by anything.
2. "by age twenty-four by the six percent born since 1955" is not correct construction and meaningless.

(E) Americans born before 1905 suffer major depression by the age of seventy-five only one percent of the time, but six percent of those born since 1955 did so by age twenty-four.
1)If we remove "the age of seventy-five" then remaining sentence is -Americans born before 1905 suffer major depression by only one percent of the time " , okay they only suffer 1% time 99% percent they are out of depression. Wrong meaning.
2)Suffer is in the present tense.

(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four.
Let's assume Americans born before 1905 were = 6000
those born since 1955= 80000
Then sentense is
only one percent of 6000 had suffered major depression by the age of seventy-five; of 8000, six percent had become depressed by age twenty-four.
1. Use of perfect tense because major depression or its effect is continious.
2. Both of these sentences are independent and related as we are talking about americans.

I hope my explanation will help.

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Re: SC 41/1000 [#permalink] New post 11 Jul 2009, 20:42
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in E, first part says "suffer", second part says "did so". Tense is not matching.

A is correct, had is required because we r talking about 2 events (depression and age of 75) of which, one had occurred before another.
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Re: SC 41/1000 [#permalink] New post 17 Sep 2010, 10:08
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noboru wrote:
arundas wrote:
I see no body selecting B. Am I missing something very obvious here? Moreover as per Manhattan GMAT a clause after semi-colon be able to stand on its own. So how can A be the correct answer.


could anybody clarify this?


(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four

The bolded portion is a clause that is related to the clause before semi colon.

For semi colon it is not necessary to explain the previous clause but if they are related there is no harm.
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Re: SC 41/1000 [#permalink] New post 13 Jul 2009, 20:54
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rashminet84 wrote:
in E, first part says "suffer", second part says "did so". Tense is not matching.

A is correct, had is required because we r talking about 2 events (depression and age of 75) of which, one had occurred before another.


In "A", "by the age of seventy five" & "by age twenty four" are not parallel.

What do you say guys?? I ignored "A" only because of this reason. "the" was missing in "by age twenty four" ?????
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Re: SC 41/1000 [#permalink] New post 23 Dec 2010, 11:45
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@aman :

of those born since 1955, six percent had become depressed by age twenty-four .

This is a complete sentence and should be able to stand independently. A is the correct option.

Initially , I thought it was C but the latter part of the sentence is awkward with parallelism being violated .

(C) of Americans born before 1905, only one percent of them have suffered major depression by age seventy-five, but six percent of those born since 1955 do by the age of twenty-four
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Re: SC 41/1000 [#permalink] New post 12 Jul 2009, 12:14
Maulikgmat wrote:
41. According to a study published by Dr. Myrna Weissman, only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four.(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four
(B) only one percent of Americans born before 1905 suffer major depression by the age of seventy-five; if they are born since 1955, six percent become depressed by age twenty-four
(C) of Americans born before 1905, only one percent of them have suffered major depression by age seventy-five, but six percent of those born since 1955 do by the age of twenty-four
(D) major depression is suffered by the age of seventy-five by only one percent of Americans born before 1905, and by age twenty-four by the six percent born since 1955
(E) Americans born before 1905 suffer major depression by the age of seventy-five only one percent of the time, but six percent of those born since 1955 did so by age twenty-four
Plz clarify between A, B and E....
E seems to be appropriate....????..
In A had is required or not????


study 'published' ... 'had suffered depression'

A
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Re: SC 41/1000 [#permalink] New post 13 Jul 2009, 19:41
41. According to a study published by Dr. Myrna Weissman, only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four.
(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four
(B) only one percent of Americans born before 1905 suffer major depression by the age of seventy-five; if they are born since 1955, six percent become depressed by age twenty-four
(C) of Americans born before 1905, only one percent of them have suffered major depression by age seventy-five, but six percent of those born since 1955 do by the age of twenty-four
(D) major depression is suffered by the age of seventy-five by only one percent of Americans born before 1905, and by age twenty-four by the six percent born since 1955
(E) Americans born before 1905 suffer major depression by the age of seventy-five only one percent of the time, but six percent of those born since 1955 did so by age twenty-four

Couldn't figure out but am guessing A/C
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Re: SC 41/1000 [#permalink] New post 14 Jul 2009, 04:08
"by the age of seventy five" & "by age twenty four" - more than word per word, the logical structure should be parallel. "by the age of seventy five" and "by age twenty four" are both nouns and hence missing a "the" shouldn't be an issue. For example you can compare a "mice" to "lions and tigers" which would still be correct in a sentence:

Like mice, lions and tigers are extremely hard working animals.
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Re: SC 41/1000 [#permalink] New post 15 Jul 2009, 07:44
OA is A....
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Re: SC 41/1000 [#permalink] New post 20 Jul 2009, 14:15
rashminet84 wrote:
in E, first part says "suffer", second part says "did so". Tense is not matching.

A is correct, had is required because we r talking about 2 events (depression and age of 75) of which, one had occurred before another.


what are two events? is it 1. getting depressed and 2. reaching the age of 75? Can you please clarify?
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Re: SC 41/1000 [#permalink] New post 20 Jul 2009, 14:21
acer2knight wrote:
rashminet84 wrote:
in E, first part says "suffer", second part says "did so". Tense is not matching.

A is correct, had is required because we r talking about 2 events (depression and age of 75) of which, one had occurred before another.


what are two events? is it 1. getting depressed and 2. reaching the age of 75? Can you please clarify?


Make it simpler, in E the phrase one percent of the time changes the original meaning of the sentence, That's why E is incorrect.
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Re: SC 41/1000 [#permalink] New post 05 Feb 2010, 13:25
very confusing but A is certainly better
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Re: SC 41/1000 [#permalink] New post 14 Feb 2010, 02:02
"A" wins.

published... and suffered : parallel verb form.
any more comments?
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Re: SC 41/1000 [#permalink] New post 15 Feb 2010, 02:36
But how is it A????

Shudnt the clauses before and after semi-colon be able to stand on their own? here in the clause after the semi-colon there seems to be a mistake???
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Re: SC 41/1000 [#permalink] New post 28 Apr 2010, 13:35
"Shudnt the clauses before and after semi-colon be able to stand on their own? here in the clause after the semi-colon there seems to be a mistake???"

- exactly why I eliminated A. Anyone care to explain?
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Re: SC 41/1000 [#permalink] New post 28 Apr 2010, 22:54
can we start a semicolon setence with an if ?
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Re: SC 41/1000 [#permalink] New post 22 Jul 2010, 07:35
In E, we are talking about one percent of the time, which is not appropriate. We need to take percentage of the total number of Americans.
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Re: SC 41/1000 [#permalink] New post 09 Aug 2010, 16:56
I see no body selecting B. Am I missing something very obvious here? Moreover as per Manhattan GMAT a clause after semi-colon be able to stand on its own. So how can A be the correct answer.
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Re: SC 41/1000 [#permalink] New post 18 Sep 2010, 03:31
gurpreetsingh wrote:
noboru wrote:
arundas wrote:
I see no body selecting B. Am I missing something very obvious here? Moreover as per Manhattan GMAT a clause after semi-colon be able to stand on its own. So how can A be the correct answer.


could anybody clarify this?


(A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four

The bolded portion is a clause that is related to the clause before semi colon.

For semi colon it is not necessary to explain the previous clause but if they are related there is no harm.


But the second part does not stand by itself...
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Re: SC 41/1000   [#permalink] 18 Sep 2010, 03:31
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