25400 Financial Literacy Autumn 2026 🔴 Practice Questions 1 Simple Interest 🔴 练习题1 简单兴趣

John has been promised $720 of interest after 9 months of investing $8,000 with Commonwealth Bank. What rate of simple interest is John earning per annum? 约翰在联邦银行投资8000美元9个月后，被承诺获得720美元的利息。约翰每年的简单利率是多...