Instru Page 1 of 2 1. A loan of $5,000 was repaid at the end of 9 months. What amount was repaid if an 8% annual rate of interest was charged? 2. What annual interest rate is earned by a 90-day Treasury Bill (T-bill) with a maturity value of $4,000 that sells for $3,900? 3. A loan of $25,000 was repaid at the end of 4 months. What amount was repaid, if a 7.2% annual rate of interest was charged?