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in june 1990 a small academic press published an initial run

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Current Student
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Joined: 23 Oct 2010
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in june 1990 a small academic press published an initial run [#permalink] New post 26 Jan 2014, 00:49
thanks for the help in advance
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Current Student
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Joined: 23 Oct 2010
Posts: 386
Location: Azerbaijan
Concentration: Finance
Schools: HEC '15 (A)
GMAT 1: 690 Q47 V38
Followers: 15

Kudos [?]: 186 [0], given: 73

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Re: in june 1990 a small academic press published an initial run [#permalink] New post 26 Jan 2014, 00:57
I think this way 2000-2005 years /1990-1995 years =1.52*2=3.04
if we divide 4640 to 1530 we get that approx. 3.04
right?

do you have any other thoughts how to solve it?
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Re: in june 1990 a small academic press published an initial run [#permalink] New post 02 Feb 2014, 10:41
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Hi,
This is how I arrived at the answers:-
Let the sales for the period 1990-95 be 'x'
Therefore, the sales for the period 1995-2000 is '1.52x'
Now, total sales for the period is 'x+1.52x=2.52x=3843'
Solving we get x=1525.
Since the question asks for the closest approximation we can approximate the value of x to 1530.
Therefore, sales for the period 1990-95 is 1530 (after closest approximation)
and, sales for the period 1995-2000 is 2318.
Hence, the sales for the period 2000-05 is 2x2318=4636 which after approximation would be 4640.
hope it helps.
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Re: in june 1990 a small academic press published an initial run [#permalink] New post 30 Mar 2015, 15:27
So on the GMAT you are suppose to do all these calculation in your head :?:
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Re: in june 1990 a small academic press published an initial run [#permalink] New post 31 Mar 2015, 23:01
Expert's post
No worries guys, you'll have access to the on-screen calculator for the Integrated Reasoning section of the exam. At times, you may want to use the calculator to do some real-world calculations quickly. Weird decimals or percentages are fair game on the IR section.
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Re: in june 1990 a small academic press published an initial run [#permalink] New post 01 Apr 2015, 20:19
Expert's post
Hi All,

This prompt is more about organization and basic arithmetic than anything else. You do NOT need the calculator as long as you take good notes, make some reasonable estimates and do some multiplication.

From the information in the prompt, we can make a little table of data (based around three 5-year 'blocks' of time):

'90-'95: 2500 books published; X books sold
'95-'00: >2500 published; 1.52X books sold

Total books sold '90-'00 = 3843 = 2.52X

From here, you should quickly note that X MUST be > 1,000. A reasonable estimate would be X = 1500 (try multiplying 2.5 by 1500 and you'll see).

'00-'05: 2(1.52X) books sold = 3.04X books sold

The question asks for TOTAL BOOKS SOLD from '90 - '95 and from '00-'05

Using X = 1500 as an estimate....
'90-'95 = X = 1500 books sold

'00-'05 = 3.04X = about 4500 books sold

From the given values in the table, the only answers that are close are:
[Reveal] Spoiler:
1530 and 4640


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Re: in june 1990 a small academic press published an initial run   [#permalink] 01 Apr 2015, 20:19
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