Word Problems Interest Mock Tests

A sum of money invested at compound interest doubles in 5 years. In how many years will it become 4 times itself at the same rate?

What is the simple interest on $500 at 8% per year for 3 years?

The simple interest on a sum of money for 2 years at 5% per annum is $200. What would be the compound interest on the same sum at the same rate for the same time?

What is the simple interest on $500 at 8% per annum for 3 years?

A sum of $1000 is invested at 10% per annum compound interest. What will be the amount after 2 years?

A sum of $5000 is invested at a simple interest rate of 8% per annum. What will be the total amount after 3 years?