The population of a village increases 9% every
year. If the present population is 11,881. What was
the population two years ago?
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Answer:
Present Population (A) =11881
let population two years back be P
Rate(R)=9%
Time(T)=2 years
A=P(1+
100
R
)
T
11881=P(1+
100
9
)
2
P=11881×(
109
100
)
2
P=10000
∴ population two years back was Rs. 10,000
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