Question

A man starts his job with a certain monthly salary and earns a fixed increment every year. If his salary was Rs 1500 after 4 years of service and Rs 1800 after 10 years of service what was his starting salary and what is the annual increment?

Answer 1

1300 is his starting salary and 50 is annual increament

Answer 2

x+4y=1500_ _ _ _ _ _ (1)
x+10y=1800_ _ _ _ _ _ (2)
solve it and get answer