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From 1981 to 1995, there is a projected increase in the numb

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From 1981 to 1995, there is a projected increase in the numb [#permalink] New post 04 Aug 2018, 02:45
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Question Stats:

95% (01:35) correct 5% (02:01) wrong based on 20 sessions
Attachment:
distribution.png
distribution.png [ 38.7 KiB | Viewed 531 times ]


From 1981 to 1995, there is a projected increase in the number of workers in which of the following categories?

I. Sales
II. Service
III. Clerical

(A) None

(B) III only

(C) I and II only

(D) II and III only

(E) I, II, and III
[Reveal] Spoiler: OA

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Director
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Re: From 1981 to 1995, there is a projected increase in the numb [#permalink] New post 04 Aug 2018, 05:27
Carcass wrote:
Attachment:
distribution.png


From 1981 to 1995, there is a projected increase in the number of workers in which of the following categories?

I. Sales
II. Service
III. Clerical

(A) None

(B) III only

(C) I and II only

(D) II and III only

(E) I, II, and III



In 1981

Sales = 8% of 150 million = 12 million

Service = 15% of 150 million = 22.5 million

Clerical = 20% of 150 million = 30 million


In 1995

Sales = 7% of 175 million = 12.25 million

Service = 16% of 175 million = 28 million

Clerical = 18% of 175 million = 31.5 million

Hence in all the three categories there was a rise i.e. option E
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Director
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Re: From 1981 to 1995, there is a projected increase in the numb [#permalink] New post 18 Nov 2018, 17:55
Is there any less time consuming method?
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Re: From 1981 to 1995, there is a projected increase in the numb [#permalink] New post 21 Nov 2018, 10:38
Expert's post
Unfortunately, I do think no. The approach above is really to the core.

Sometimes, you do need to reach the solution via trial and error. Sometimes there is a shortcut (honestly, a lot of time but it depends on the question at stake)

Sometimes, the only approach is time-consuming. The trick is to gain time whenever is possible

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Re: From 1981 to 1995, there is a projected increase in the numb   [#permalink] 21 Nov 2018, 10:38
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From 1981 to 1995, there is a projected increase in the numb

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