The population of a certain town increased by 5%
in 2014 and decreased by 5% in 2015 and then
again increased by 10% in 2016. If it was 80000 in
the beginning, what is it in 2017?
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Let the population in 2006 be x.
Pop. in 2009=x×(1+
100
5
)
3
⇒1,38,915=x×(
20
21
)
3
⇒x=
9261
138915×8000
=120000
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