A company increases every salary of an officer by 20%. His salary in the year 2001 was Tk. 26, What was his salary in 1999?

A Tk. 20,000

B Tk. 19,028

C Tk. 18,500

D Tk. 18,840

Correct Answer: Option C

Let his salary in 1999 be x.

In 2000, his salary increased into= 1.2x

In, 2001, his salary increased into= 1.2 * 1.2x

= 1.44x

Now,

1.44x = 26640 tk

or, x = 26640/1.44 tk

= 18,500 tk