Question

Aman starts his job with a certain monthly salary and fixed increment every yearIf his salary will be 11,000 after 2 years and 14,000 after 4 years of his service,what is his starting salary and what is the annual increment?

Answer 1

Let this be in an ap with first salary or first term a and common difference or increment d .

In the second year,
a+d=11000-----(1)
IN THE fourth year.
a+3d=14000-------(2)
Subtracting (1) from (2), we get

a+3d-a-d=14000-11000
2d=3000
d=1500.
Hence, a=9500.
Hence the starting salary was 9500 and the increment is 1500.

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