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At the end of year X, was the number of self-employed men mo

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At the end of year X, was the number of self-employed men mo [#permalink] New post 06 Jul 2013, 02:25
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At the end of year X, was the number of self-employed men more than twice the number of self-employed women?

(1) From the end of Year X to the end of year Y, the number of self-employed men increased by 47 thousand, which was an increase of 1 percent, and the number of self-employed women increased by 213 thousand, which was an increase of 10 percent.

(2) At the end of year X, there were 2.57 million more self-employed men than self-employed women.

[Reveal] Spoiler:
Please provide the equation for statement 1. Thanks.
[Reveal] Spoiler: OA

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Re: At the end of year X, was the number of self-employed men mo [#permalink] New post 06 Jul 2013, 02:32
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At the end of year X, was the number of self-employed men more than twice the number of self-employed women?

(1) From the end of Year X to the end of year Y, the number of self-employed men increased by 47 thousand, which was an increase of 1 percent, and the number of self-employed women increased by 213 thousand, which was an increase of 10 percent. We can get the number of self-employed men as well as he number of self-employed women at the end of Year X, and compare. Sufficient.

To illustrate:
From the end of Year X to the end of year Y, the number of self-employed men increased by 47 thousand, which was an increase of 1 percent: (The number of self-employed men)*0.01=47,000 --> we can get (The number of self-employed men).
From the end of Year X to the end of year Y, the number of self-employed women increased by 213 thousand, which was an increase of 10 percent: (The number of self-employed women)*0.1=213,000 --> we can get (The number of self-employed women).

(2) At the end of year X, there were 2.57 million more self-employed men than self-employed women. We cannot get the rato from this info. Not sufficient.

Answer: A.

Hope it's clear.
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Re: At the end of year X, was the number of self-employed men mo [#permalink] New post 26 Nov 2013, 10:10
% - change = change in value / origninal value

you can now plug in the numbers from stmt 1: 1 % = 47,000/x = male at year X
10 % = 213,000/y = female at year X
clearly sufficient.
stmt 2 cleary IS. so A
Re: At the end of year X, was the number of self-employed men mo   [#permalink] 26 Nov 2013, 10:10
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