the population of a town decreases to 100000 in the year 2010 at a rate of 5% per annum . find the population before 5 years in the year 2005.
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Answer:
population in 2010= 100000
Rate = 5%
time = 5 years
therefore population in 2005 = Population in 2010(1+R/100)^5
= 100000(21/20)^5
=4084101/32
= 127628
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