A percentage is a way to describe a part of a whole. The correct option is B.
What are Percentages?
A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
Given that the colony of 100,000 ants has been declining in number at a rate of 11.4% per month. Therefore, the number of months it will take for the ant population to reach 25,000 ants is,
Population = 100,000(1-0.114)ⁿ
25,000 = 100,000(1-0.114)ⁿ
0.25 = 0.886ⁿ
log(0.25) / log(0.886) = n
n = 11.45335
Since the value is close to 12.2 months.
Hence, the correct option is B.
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