Madhya Pradesh Police Exam Model Paper 8

Question : 57 of 100

Marks: +1, -0

The population of a town increases by 8% annually. If the present population is 23,328. What was it 2 years ago?

28,000
27,000
20,000
25,000

Solution:

Given:
Population increases annually = 8%
Present population = 23,328
Formula Used:
Population 2 years ago × (100 + increase%)/100 × (100+ increase%)/100 = Present Population
Calculation:
Population 2 years ago × (100 + increase%)/100 × (100+ increase%)/100 = Present Population
⇒ Population 2 years ago

= 23,328 × (100{/}108) × (100{/}108)

⇒ Population 2 years ago = 20,000
∴ 2 years ago population was 20,000.

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