PART C. Perform these calculations using a 60-day year. Place your answers in the spaces provided at the right. Principal Rate Time Interest $220.00 6% 60 days 1. 454.00 6% 120 days 2. 796.00 9% 90 days 3. 2400.00 15% 30 days 4. 1080.00 3% 200 days 5. 80.00 12% 105 days 6. 1600.00 18% 100 days 7