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SSC GD 2023 PYQ — Question 52

SSC GD Constable (English) - 17 Jan 2023 - Shift 1 • Quantitative Aptitude • Q52

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The present population of a city is 92,61,000. If it has been increasing at the rate of 5% per annum, find its population 3 years ago.

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Correct answer: B

Explanation

The correct answer is option 2 i.e. 80,00,000

Let the population 3 years ago be P

Increasing Rate (R) = 5% 

Time period (T) = 3 years 

Present population = 9261000

According to the question -

P{1 + R/100}T = 9261000

P{1 + 5/100}3 = 9261000

P = (9261000 × 20 × 20 × 20)/(21 × 21 × 21)

P = 80,00,000