Question

A person starts a job with some fixed salary and yearly increment.

After 4 years his salary is Rs.15000 and after 10 years it becomes Rs.

18000. Then find his monthly salary and increment.​

Answer 1

Answer:

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Answer 2

Given info : A person starts a job with some fixed salary and yearly increment. after 4 years, his salary is 15,000 Rs. and after 10 years, it becomes 18,000 Rs.

To find : his monthly salary and increment are ..

solution : let his yearly salary is a and yearly increment is d.

after 4 years,

a + 4d = 15000 ...(1)

after 10 years,

a + 10d = 18000 ...(2)

from equations (1) and (2) we get,

a + 10d - a - 4d = 18000 - 15000

⇒ 6d = 3000

⇒d = 500

so a = 15000 - 4d = 15000 - 4 × 500 = 13000

Therefore his salary is 13000 Rs. per annum and increment is 500 Rs. per annum