The population of a town today is $352800$. If it has been growing at $5\%$ per year, what was the population $2$ years ago?
Practice this question from Chapter Mock 3: Percentage, with options and an explanation.
Question
The population of a town today is $352800$. If it has been growing at $5\%$ per year, what was the population $2$ years ago?
Option A
300000
Option B
315000
Option C — Correct answer
320000
Correct choice.
Option D
336000
Explanation
Past population $=\frac{352800}{1.05^2}=352800\times\frac{20}{21}\times\frac{20}{21}=320000$.