A manufacturer reckons that the value of a machine, which costs him Rs. 15625, will depreciate each year by 20%. Find the estimated value at the end of 5 years.

Rs.10,000 is invested at 5% interest rate p.a. Find the interest at the end of one year.

A machinerty worth Rs.10,500 depreciated by 5% .Find its value after one year.

A scooter was bought at Rs 42,000. Its value depreciated at the rate of 8% per annum. Find its value after one year.

Anita takes a loan of Rs.5,000 at 15% per year as rate of interest. Find the interest she has to pay at the end of one year.

Rs.3,500 is given at 7% p.a. rate of interest. Find the interest which will be received at the end of two years.

Rs.6,050 is borrowed at 6.5% rate of interest p.a.. Find the interest and the amount to be paid at the end of 3 years.

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.