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Recent estimates predict that between 1982 and 1995 the

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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 23 Nov 2017, 02:43
GMATPill wrote:
You'll need to visualize your answer for this one.
You can identify this question as the same as an "inference" question - some conclusion is stated and we need information in the passage to support it.

Think of the pie to get this one.

"Low" will NOT increase its share of total employment. So let's say that it's share of the pie stays the same, but the overall pie gets bigger.

So, "Low" might have 15% market share. And in 1995, it STILL has 15%...though the overall pie got bigger.

"High" WILL increase its share of total employment. It can either have more or less than the 15% market share that "Low" has.

1) If <15%, let's say 5%. If 5% and "High" increased to 8%, that gain CAN be less than the gain that LOW experiences. While LOW's % market share stays the same, there is an increase in the overall pie and so LOW will increase. HIGH staying at 5% will also increase but it will increase a very small amount. Its share % can increase to 8%, and the total quantity increased can still be smaller than LOW's increase. See example below.

2) If >15%, let's say 25%. If 25% and "High" increased to 35%, that gain is going to be BIGGER than LOW's gain....conflicts with information in the passage


With Numbers:

Assume Total Employment: 100 ---> 200
1982: LOW 15, HIGH 5.
LOW (15/100 = 15%); HIGH (5/100 = 5%)

1995: LOW 30, HIGH 16
LOW (30/200 = 15%); HIGH (16/200 = 8%)

Here, LOW's % stayed the same, but HIGH's % increased. This is consistent with information provided.
But now, LOW's overall increase was 15 (30-15) while HIGH's increase was only 11 (16-5)

LOW must have started off at a higher base.



according to the above explanation, the answer must be A
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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 29 Dec 2017, 08:54
Can someone mathematically explain, why is option B correct?
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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 29 Dec 2017, 18:23
Khuranasup wrote:
Can someone mathematically explain, why is option B correct?

Dear Khuranasup

Please see my post of Nov 17, 2017.

Mike :-)
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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 12 Jan 2018, 14:00
Hi, Please reconside the OA.
It should be A IMO, also detailed explainations in comments also concur with A.

COnsider a scenario:
1982-
Total=100, Low=15, High=5
1995-
Total=200, low=30, High=11
Share of high-Increased but the increase in lesser than increase in Low.
Share of low is the same.
This proves that it is not necessary to have more people workinh highpaying ser than in low paying ser.

Thanks in advance!
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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 26 Jan 2018, 06:44
C,D and E are eliminated straightaway..Its between A and B....I chose Option B
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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 30 Jan 2018, 23:37
Please explain why option B is correct ? I marked D as an answer.
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Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 03 Feb 2018, 01:40
SudiptoGmat wrote:
Recent estimates predict that between 1982 and 1995 the greatest increase in the number of people employed will be in the category of low-paying service occupations. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share.

If the estimates above are accurate, which of the following conclusions can be drawn?
(A) In 1982 more people were working in low-paying service occupations than were working in high-paying service occupations.
(B) In 1995 more people will be working in high-paying service occupations than will be working in low-paying service occupations.
(C) Nonservice occupations will account for the same share of total employment in 1995 as in 1982.
(D) Many of the people who were working in low-paying service occupations in 1982 will be working in high-paying service occupations by 1995.
(E) The rate of growth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.


[b]Suppose LP-low paying job, HP-High paying Job

.....................1982.......... 1995
No. Of LP.......... x................3x (i took it 3x and other 2y because rate of growth of LP is higher than HP)
no. Of HP..........y.................2y
total...............x+y...........3x+2y

stem has given two conditions
1. x/(x+y) <= 3x/(3x+2y)
2. 2y/(3x+2y) > y/(x+y)

and these two conditions are satisfied only when B is true. so answer is B
try putting x=1,1 and y=6, 8
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Re: Recent estimates predict that between 1982 and 1995 the  [#permalink]

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New post 03 Feb 2018, 01:50
vaibranjan wrote:
Please explain why option B is correct ? I marked D as an answer.

[b]Suppose LP-low paying job, HP-High paying Job

.....................1982.......... 1995
No. Of LP.......... x................3x (i took it 3x and other 2y because rate of growth of LP is higher than HP)
no. Of HP..........y.................2y
total...............x+y...........3x+2y

stem has given two conditions
1. x/(x+y) <= 3x/(3x+2y)
2. 2y/(3x+2y) > y/(x+y)

and these two conditions are satisfied only when B is true. so answer is B
try putting x=1,1 and y=6, 8
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Re: Recent estimates predict that between 1982 and 1995 the &nbs [#permalink] 03 Feb 2018, 01:50

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