You have invested S$10,000 for 10 years at 12 percent per annum. You have to pay tax on the interest income each year. Knowing that the after tax interest rate = (1- tax rate on interest earned) (Interest rate), what is the value of the investment at the end of the tenth year if the tax rate is15 percent per annum?

Please show step by step workings and explanations for better understanding, thanks a lot