4. The population of a certain city is 125000. If the annual birth rate is 3.3% and the annual
death rate is 1.3%, calculate the population after 3 years.
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Step-by-step explanation:
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Answer:
Given,
Population(P)=125000
Birth rate=5.5% per annum
Death rate=3.5% per annum
Time(t)=3 years
So, the annual growth rate will be
=Birth rate−Death rate
=5.5−3.5=2%
Formula used:
The population after t years is given by
=P[1+
100
R
]
t
Where
P=Initial population
R=Rate
t=Time
Apply the above formula, we get
=125000[1+
100
2
]3
=125000[
100
102
]
3
=125000[1.02]
3
=132651
Hence, The population after 3 years is 132651.
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