The income of a company increases 20% per annum. If its income is 2664000 in the year 1999 what was its income in the year 1997?	Answers:
A) 2220000  B) 2850000  C) 2121000  D) 1855000  E) None of these
Let income in 1997 = x   According to the question,   Income in 1998 = x + x⁄5 = 6x⁄5   Income in 1999 = 6x⁄5 + 6x⁄25 = 36x⁄25   But given, income in 1999 = 2664000   ∴ 36x⁄25 = 2664000 ⇒ x = 1850000   Answer None of these
<result>E</result>
The income of a company increases 20% per annum. If its income is 2664000 in the year 1999 what was its income in the year 1997?