A person plans to invest a certain amount of money in a fund at the beginning of each month for 30 years, the first being now. The same person wants to receive 2.500 TL from the fund at the end of each month for 20 years, one month after the last deposit. If we assume that the interest rate is 18% for all periods, how many TL should this person invest in the fund at the beginning of the month for 30 years? a. 12.05 b. 11.48 c. 11.05 d. 11.31 * e.11.95

answer:11.31