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.

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?

A man deposited ₹ 10,000 in a bank at the rate of 5% simple interest annually. Find the amount in 15th year since he deposited the amount and also calculate the total amount after 20 years.

Aman deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in 15th year since he deposited the amount and also calculate the total amount after 20 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 ?

If the ratio of sum of m terms of an A.P. to the sum of n terms is (2m + 1) : (3n +1), find the ratio of 7th to 10th term

Arif took a loan of Rs 80,000 from a bank. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after 1(1)/(2) years if the interest is : 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 9th year.

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 .

A sum of $1000 is invested at 8% simple interest per annum. Calculate the interest at the end of 1, 2, 3, ... years. Is the sequence of interests an A.P. ? Find the interest at the end of 30 years.