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In a forest 150 deer were caught, tagged with electronic mar

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In a forest 150 deer were caught, tagged with electronic mar [#permalink] New post 21 Aug 2013, 16:37
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88% (02:06) correct 12% (00:00) wrong based on 25 sessions
In a forest 150 deer were caught, tagged with electronic markers, then released. A week later, 50 deer were captured in the same forest. Of these 50 deer, it was found that 5 had been tagged with the electronic markers. If the percentage of tagged deer in the second sample approximates the percentage of tagged deer in the forest, and if no deer had either left or entered the forest over the preceding week, what is the approximate number of deer in the forest?

A. 150
B. 750
C. 1,250
D. 1,500
E. 2,500
[Reveal] Spoiler: OA

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Asif vai.....


Last edited by Bunuel on 22 Aug 2013, 02:27, edited 1 time in total.
Edited the question.
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Re: In a forest 150 deer were caught, tagged with electronic mar [#permalink] New post 22 Aug 2013, 02:31
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Asifpirlo wrote:
In a forest 150 deer were caught, tagged with electronic markers, then released. A week later, 50 deer were captured in the same forest. Of these 50 deer, it was found that 5 had been tagged with the electronic markers. If the percentage of tagged deer in the second sample approximates the percentage of tagged deer in the forest, and if no deer had either left or entered the forest over the preceding week, what is the approximate number of deer in the forest?

A. 150
B. 750
C. 1,250
D. 1,500
E. 2,500


The percentage of tagged deer in the second sample = 5/50*100=10%.

So, 150 tagged deers comprise 10% of total # of deers --> total # of deers = 150*10 = 1,500.

Answer: D.
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Re: In a forest 150 deer were caught, tagged with electronic mar   [#permalink] 22 Aug 2013, 02:31
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In a forest 150 deer were caught, tagged with electronic mar

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