Compound Interest

The population of a city was 120000 in the year 2009. During the next year it increased by 6% but due to an epidemic it decreased by 5% in the following year. What is the population in the year 2011 ?

Population in 2009(p) = 120000

Since population increased by 6%. So, New population in 2010(P')

So the population in 2010 is 127200.

Now from this there was a decline in population by 5%.

So new population in 2011

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