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SSC GD 2023 PYQ — Question 50

SSC GD Constable (English) - 24 Jan 2023 - Shift 3 • Quantitative Aptitude • Q50

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The population of a town 3 years ago was 84000. Due to migration to cities, it decreases every year at the rate of 10 percent. The present population of the town is :

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Correct answer: B

Explanation

The correct answer is option 2 i.e. 61236.

Given:

The population of a town 3 years ago = 84000

Concept used:

Present population = Initial population×(1−D100)nInitial\ population \times ({1 - {D\over 100}})^n

Explanation:

According to the given question,

Present population = 84000×(1−10100)384000 \times ({1 - {10 \over 100}})^3

Present population = 84000×(910)384000 \times ({9 \over 10})^3

Present population = 61,236