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Question

The population of the city was 20000 in the year 1997 it increases at the rate of 5% per annum find the population at the end of the Year 2000.

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Solution

The population of the city in 1997 is 20000.

Then, Population, P=20000

Rate of increment, R=5%

We have to find the population at the end of year 2000, i.e. Time, n=3 years

Population after 3 years is given by

P=P(1+R100)n

=20000(1+5100)3

=20000(105100)3

=20000(105100)×(105100)×(105100)

=23152.5

Hence, the population of the city at the end of 2000 will be approx 23152 people.


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