47. How much interest was earned by an investment that earns at a rate of 9% compounded semi- annually for 7 years if the initial investment is at P18,000.00? EDI 1911 A. P 15,335.01 B. P15,353.01 C. P15,535.01 D. P 15,533.01 IGUTO CL 48. Suppose that you want to earn P9,281.25 after 27 months and you have P75,000. At what rate should you invest the said amount? A. 5.25% B. 5.50% C. 5.75% D. 11.50%