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Carcass

Verbal Expert

Joined: 18 Apr 2015

Posts: 16458

GRE 1: Q160 V160

From 1981 to 1995, there is a projected increase in the numb [#permalink]

04 Aug 2018, 02:45

Expert Reply

00:00

Question Stats:

92% (01:30) correct

7% (01:47) wrong

based on 51 sessions

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Attachment:

distribution.png [ 38.7 KiB | Viewed 1570 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

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pranab223

Joined: 20 Apr 2016

Posts: 1306

WE:Engineering (Energy and Utilities)

Re: From 1981 to 1995, there is a projected increase in the numb [#permalink]

04 Aug 2018, 05:27

Carcass wrote:

Attachment:

distribution.png

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

Joined: 09 Nov 2018

Posts: 505

Re: From 1981 to 1995, there is a projected increase in the numb [#permalink]

18 Nov 2018, 17:55

Is there any less time consuming method?

Carcass

Verbal Expert

Joined: 18 Apr 2015

Posts: 16458

GRE 1: Q160 V160

Re: From 1981 to 1995, there is a projected increase in the numb [#permalink]

21 Nov 2018, 10:38

Expert Reply

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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