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9 changes in the value of imports between consecutive

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GRE Prep Club Legend
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Joined: 07 Jun 2014
Posts: 4809
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 123

Kudos [?]: 1971 [0], given: 397

9 changes in the value of imports between consecutive [#permalink] New post 10 Jan 2016, 15:49
Expert's post
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Question Stats:

55% (01:01) correct 44% (01:52) wrong based on 18 sessions
Attachment:
#GREpracticequestion Which of the following is closest to the average .jpg
#GREpracticequestion Which of the following is closest to the average .jpg [ 58.61 KiB | Viewed 1051 times ]


Which of the following is closest to the average (arithmetic mean) of the 9 changes in the value of imports between consecutive years from 2000 to
2009 ?

A $260 million
B $320 million
C $400 million
D $480 million
E $640 million


Practice Questions
Question: 5
Page: 163
Difficulty: medium
[Reveal] Spoiler: OA

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GRE Prep Club Legend
GRE Prep Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4809
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 123

Kudos [?]: 1971 [0], given: 397

Re: 9 changes in the value of imports between consecutive [#permalink] New post 10 Jan 2016, 16:16
Expert's post
Solution

Now the object is to find the average of 9 changes from 2000 to 2009. Which can also be defined as average change between 2000 to 2009.

So in year 2000: $3.3 Billion

and year 2009: $9 Billion.

Average change per year = \(\frac{($9 - $3.3)}{9}\) = $640 million Approx
_________________

Sandy
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