In a national park 150 tigers were caught, tagged with electronic markers, then released. A week later, 50 tigers were captured in the same national park. Of these 50 tigers, it was found that 5 had been tagged with the electronic markers. If the percentage of tagged tigers in the second sample approximates the percentage of tagged tigers in the national park, and if no tiger had either left or entered the national park over the preceding week, what is the approximate number of tigers in the national park?
Solution
The percentage of tagged tigers in second sample = $$\ \ \frac{\ 5}{50}\times\ 100\ $$ = 10%
It is mentioned that there are 150 tagged tigers and approximately 10% of all the tigers in national park are tagged.
Therefore, approximate number of tigers in national park = 10*150 = 1500
Answer is option D.
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