A person borrows Rs.1,00,000 from a bank at 10% per annum simple interest and clears the debt in five years. If the instalment paid at the end of the first, second, third and fourth years to clear the debt are Rs.10,000, Rs.20,000, Rs.30,000 and Rs.40,000, respectively, what amount should be paid at the end of the fifth year to clear the debt?

The sum for 2 years gives a compound interest of ₹ 3225 at 15 % rate. Then sum is 

If the amount is $$3{3\over 8}$$ times the sum after 3 years at compound interest compounded annually, then the rate of interest per annum is 

What will be the compound interest (nearest to Rs. 1 on a sum of Rs. 25,000 for 2 years at 12% p.a., if the interest is compounded 8-monthly?

What is the difference between compound interest and simple interest on Rs. 2500 for 2 years at 4% per annum?

A sum of money becomes eight times in 3 years, if the rate is compounded annually. In how much time will the amount at the same compound rate become sixteen times? 

In how many years will be Rs. 2,000 amounts to Rs.2,420 at 10% per annum compound interest ?

If the difference between the compound interest and simple interest on a certain sum at 5% per annum for 3 years is Rs.11.40, what is the approximate sum?