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Africa's black rhino population in the mid-1970's numbered about 20,00

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Re: Africa's black rhino population in the mid-1970's numbered about 20,00 [#permalink]

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New post 09 Mar 2017, 10:08
Africa's black rhino population in the mid-1970's numbered about 20,000, ten times the estimated population of 2,000 in 1997.

(b) that of their estimated population
(c) more than the population's estimated amount
(d) more black rhinos than their population estimate
(e) more than that of their population's estimated amount

Subject is the population, option B, D and E are out because they are refering to rhinos as subject.Option C is out because it is wrongly constructed also distorts the meaning.

We are left with option A which is alos the correct choice.
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Re: Africa's black rhino population in the mid-1970's numbered about 20,00 [#permalink]

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New post 30 Jun 2017, 21:39
Hi egmat

Bit confused while applying comparison here.
Initial no: In 1997, 2000
Mid 1970: 20,000 (10 times of 2000)

More than phrase in C,D and E suggests value more than 20,000 in mid 1970s which is incorrect.

For (B) does that jump over noun ten times and
noun phrase in the mid-1970's numbered about 20,000, to suggest illogical
comparison between rhino population and esteemed population.

WR,
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Re: Africa's black rhino population in the mid-1970's numbered about 20,00 [#permalink]

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New post 01 Jul 2017, 03:39
Hi egmat
Please analyze this question in detail.
I get confused when there are numbers in comparison.
Please help .
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Re: Africa's black rhino population in the mid-1970's numbered about 20,00 [#permalink]

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New post 27 Sep 2017, 05:05
misterJJ2u wrote:
Africa's black rhino population in the mid-1970's numbered about 20,000, ten times the estimated population of 2,000 in 1997.

(A) the estimated population
(B) that of their estimated population
(C) more than the population's estimated amount
(D) more black rhinos than their population estimate
(E) more than that of their population's estimated amount

[Reveal] Spoiler:
Please provide explanations why each answer should be ruled out.


A small doubt

If correct answer is A

Then how do we know that

TEN TIMES (THE ESTIMATED POPULATION ) of 2000 in 1997


Ten times? What? More or Less?

How can we tell that we need more or not? Becoz if we dont use more then it can be TEN TIMES LESS

isn't it?
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Africa's black rhino population in the mid-1970's numbered about 20,00 [#permalink]

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New post 27 Mar 2018, 08:59
daagh wrote:
(a) the estimated population--- a quantity compared with another quantity: correct comparison and correct choice.
(b) that of their estimated population ---- The problem is the plural pronoun ‘their’; there is no justification for using a plural
(c) more than the population's estimated amount ---- ‘ten times as x means 10x; ten times ‘more than x’ means 11 x
(d) more black rhinos than their population estimate--- same as C ; in addition the problematic ‘their’
(e) more than that of their population's estimated amount --- same as that of D.


daagh GMATNinja
Can we eliminate options B and D on the basis of the pronoun that ?
"that" takes a singular noun(population). So the sentence looks like
"Africa's black rhino population in the mid-1970's numbered about 20,000, ten times population of their estimated population of 2,000 in 1997."
Is this a correct approach?
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Re: Africa's black rhino population in the mid-1970's numbered about 20,00 [#permalink]

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New post 27 Mar 2018, 09:46
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itisSheldon wrote:
daagh wrote:
(a) the estimated population--- a quantity compared with another quantity: correct comparison and correct choice.
(b) that of their estimated population ---- The problem is the plural pronoun ‘their’; there is no justification for using a plural
(c) more than the population's estimated amount ---- ‘ten times as x means 10x; ten times ‘more than x’ means 11 x
(d) more black rhinos than their population estimate--- same as C ; in addition the problematic ‘their’
(e) more than that of their population's estimated amount --- same as that of D.


daagh GMATNinja
Can we eliminate options B and D on the basis of the pronoun that ?
"that" takes a singular noun(population). So the sentence looks like
"Africa's black rhino population in the mid-1970's numbered about 20,000, ten times population of their estimated population of 2,000 in 1997."
Is this a correct approach?

Yup, that's exactly how I would think of it. The only singular noun "that" could possibly refer back to is the population. So for (B), we get "...ten times the population of their estimated population", exactly as you said. For (E), we get "...ten times more than the population of their population's estimated amount." Both are pretty ridiculous. (And "their" is a problem in both of those too, for whatever it's worth.)

The GMAT seems to love using "that" as a pronoun for some reason, so I promise that you'll see this again. :-)
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Re: Africa's black rhino population in the mid-1970's numbered about 20,00   [#permalink] 27 Mar 2018, 09:46
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