If population of certain city increases at the rate of 5%. If population in 1981 was 138915, then population in 1978 was?	Choose the correct choice: A) 120000 B) 228788 C) 266891 D) 267689 E) 127791
X * (105/100) * (105/100) * (105/100) = 138915   X = 138915/1.157625= 
<gadget id="calculator">138915/1.157625</gadget>
<output>120_000</output>
120000   120000nswer:120000
<result>A</result>
If population of certain city increases at the rate of 5%. If population in 1981 was 138915, then population in 1978 was?