If population of certain city increases at the rate of 5%. If population in 1981 was 324135, then population in 1978 was? Options.
A) 120000	B) 120029	C) 187899	D) 178968	E) 280000
X * (105/100) * (105/100) * (105/100) = 324185   X = 324185/1.157625   X = 280000   Answer:280000
<result>E</result>
If population of certain city increases at the rate of 5%. If population in 1981 was 324135, then population in 1978 was?