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प्रश्न
The population of a city is 1,25,000. If the annual birth rate and death rate are 5.5% and 3.5% respectively. Calculate the population of the city after 3 years.
उत्तर
Here net growth = (5.5 - 3.5)% = 2%
P = ₹ 1,25,000
n = 3 years
∴ Population of the city after 3 years
= 1,25,000 `(1 + 2/100)^3`
= 1,25,000 `((102)/(100))^3`
= 1,25,000 x `(102 xx 102 xx 102)/(100 xx 100 xx 100)`
= 1,32,651.
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