Please complete Activity 3. 1. Calculate the interest amount for each of the principals for the stated simple interest rate and time period: a. R500, 00; 7% per year; 1 year b . R500, 00; 24% per year; 3 months C . R1000, 00; 8% per year; 1 year d. R200, 00; 12% per year, 18 months 2. Let's say you invested R2 000,00 at an interest rate of 6% over 5 years. What wo the investment increase to? 3, A credit card holder has owed the credit card company R200, 00 for a month and receives an account containing an interest charge of R3. Find the interest rate. 4. Assume your commission is 30% of sales. Your sales were R5000, 00. What is th value of the commission owed to you? 5. You bought a house for R150 000,00. The value of your house appreciates at 15 per year. How much is your house worth after 2 years? You bought a tractor for your farm for R140 090,00. It depreciates by 15% per How much will the tractor be worth in 7 years time? You plan to invest R10 000 in a bank. Which will give you a higher return: a) Investing at 14% compounded twice a year or b) Investing at 13,5% compounded annually. How can you achieve improvements in productivity? How can an organization in the short term, improve productivity through its employees? What are the key elements of productivity? What impact will HIVAIDS have on productivity? Given the following table answer the questions to follow