Question
Download Solution PDFThe population of a town is decreasing at a rate of 10% per annum. If the population two years ago was 20,000, Calculate the present population.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Population two years ago = 20,000
Rate of decrease per annum = 10%
Formula used:
Present Population = Previous Population × (1 - Rate/100)Time
Calculation:
Present Population = 20000 × (1 - 10/100)2
⇒ Present Population = 20000 × (0.9)2
⇒ Present Population = 20000 × 0.81
⇒ Present Population = 16200
∴ The correct answer is option 1.
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