If population of certain city increases at the rate of 5%. If population in 1981 was 138915, then population in 1978 was?
Pick one:	A) 1,20,000	B) 1,10,000	C) 1,00,000	D) 90,000	E) 80,000
X * (105/100) * (105/100) * (105/100) = 138915   X = 138915/1.157625= 
<gadget id="calculator">138915/1.157625</gadget>
<output>120_000</output>
120000   1,20,000NSWER:1,20,000
<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?