On what sum will be compounded interest at 4% per annum for 2 years compounded annually be 46880? 5. At what rate a sum of money will becomes eight times of itself in 3 years, if the interes compounded yearly? 6. At what rate percent per annum will 62500 amount to 72900 in 2 years compound annually? 7. In what time will 5000 gives the compound interest 1655 at 10% per annum compout interest? 12100 at the rate of 10% per annum