Question
Download Solution PDFThe population of a village decreases each year by 20%. If the present population of the village is 8,000 then find the population of village two years ago.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :
The population of a village decreases each year by 20%.
And the present population of the village is 8,000
Formula used :
Old population × (decreased percent /100) time = present population
Calculation :
Let the population of village two years ago be x
According to the question,
⇒ x × 80/100 × 80/100 = 8,000
⇒ x = 8000 × 25/16
⇒ x = 12500
∴ x = 12,500Last updated on Jul 8, 2025
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