Puneet Sharma starts his job in a school with a certain monthly salary and earns a fixed increment every year. If his salary was rs.15000 after 4 years service and rs. 18000 after 10 years of service. What was his starting salary and what is the annual increment?

Rohan's age after 7 years is 17 years. What is his age 6 years ago ?

The rate at which monthly salary of a person increases annually is in A.P. If he was drawing $4500 p.m. in his 1 1th year of service and $ 6900 p.m. in his 27th year of service, find salary at start and annual increment. Also find monthly salary after 30 years.

Ishan spends rupees x and saves rupees y per week. What is his income after 2 years ?

Subba Rao started work in 1995 at an annual salary of $5000 and received an increment of $ 200 each year. In which year did his income reach $ 7000 ?

What will Rs 500 amounts to in 10 years after its deposit in a bank which pays annual interest rate of 10% compounded annually?

On 1st January every year, a person buys National saving certificates of value exceeding of his last year’s purchase by Rs. 100. After 10 years he finds that the total value of the certificates' purchased by him is $5000. Find the value of certificates purchased by him :-in the first year .