Question

The population of a certain city is 125000. if the amount birth rate is 3.3% and the annuals death rate is 1.3% calculate the population after 3years.

Answer 1

Heya ❗
here's your answer ❗

Present population of the city (p) = 125000

Time(n) = 3 years,

Rate of birth (R₁) = 3.3%

Rate of death (R₂) = 1.3

so, the net rate of increase (R₁ - R₂)
= 3.3 - 1.3 = 2%

Population after 3 years = 125000(1 - 2/100)³

= 125000 × (1.02)³

= 125000 × 1.061208

= 132651

glad help you
it help you,

thank you☺
@vaibhavhoax

Answer 2

Heya!
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▪Given that ->
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=> Present Population ( p ) -> 125000


=> R1 -> 3.3%


=> R2 -> 1.3%


=> Time ( n ) -> 3 years


=> Total Increase in Population = Birth Rate ( R1 ) - Death Rate ( R2 )


=> 3.3 - 1.3 = 2%



Now Using the Formula =>


$= > amount \: a \: = p \: (1 - \frac{r}{100} ) {}^{n}$

↪Substituting the Values ->


A = 125000 × ( 1 - 2/100 )³


A = 125000 × ( 1.02)³


A = 125000 × 1.061


A = 132651


♦Hence the population After A Span of 3 Years is 132651 .

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