There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest (in ₹) on ₹12,000 after 3 years at the same rate of interest?

Find the least number of complete years in which a sum of money put out at the rate of 20% per annum compound interest will be more than double.

A sum of money doubles itself in 15 years at compound interest. In how many years it will become 8 times at the same compound interest rate?

Compound interest on ₹15,000 at 4% p.a. for 3 years compounded annually is

In what duration of time will ₹3300 become ₹3399 at 12% per annum interest compounded quarterly?

Compound interest on ₹2,000 for one year at 10% p.a., compounded half-yearly is