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In a given year, the United States census estimated that there were

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In a given year, the United States census estimated that there were  [#permalink]

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New post 28 May 2017, 11:29
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Question Stats:

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In a given year, the United States census estimated that there were approximately 6.5 billion people in the world and 300 million in the United States. Approximately what percentage of the world’s population lived in the United States that year?

(A) 0.0046%
(B) 0.046%
(C) 0.46%
(D) 4.6%
(E) 46%

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In a given year, the United States census estimated that there were  [#permalink]

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New post 28 May 2017, 15:36
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1 Billion is 1000 Million, 6.5 Billion is 6500 Million. The number of people in United States is 300 Million.

The population in the US is \(\frac{300}{6500}*100\) = approximately 4.6%(Option D) of the world's population.
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Re: In a given year, the United States census estimated that there were  [#permalink]

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New post 29 May 2017, 01:21
1 Billion= 1000 Million;
6.5 Billion= 6500 Million
Required percentage = \(\frac{300}{6500}\)*100= 4.6%

Answer: D.

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Re: In a given year, the United States census estimated that there were  [#permalink]

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New post 29 Jun 2019, 22:42
6.5 Billon=65*10^8
300 million=3*10^8
Require %= 3/65*100=4.6%
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Re: In a given year, the United States census estimated that there were  [#permalink]

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New post 30 Jun 2019, 08:07
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3/65*100=4.6 hence option D
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Re: In a given year, the United States census estimated that there were   [#permalink] 30 Jun 2019, 08:07
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