estion 4 [12 marks] onsider an advertisement clip that you see from a magazine and that is shown in the gure below. The advertisement is that of a fixed deposit product/service provided by Bank ABC. Unfortunately your cup of coffee spills on the magazine, erasing some of the importand information from the add. You dry page of the advertisement and later put question marks and roman figures where information was erased by the coffee. FIXED DEPOSIT - EXPLAINED If I invest R100 000 for 60 months how much interest will learn? A B CO If I withdraw interest monthly. If I withdraw interest annually. If I withdraw interest at expiry. Invest from as little as R500! INTEREST PAYOUT FREQUENCY Interest rate per annum: Interest earned: Total payout: B THESE ARE MY OPTIONS A INTEREST MONTHLY C INTEREST AT EXPIRY INTEREST ANNUALLY ADDR TERM A MONTHLY 8.80% iv. V. rate of 8,80% ii. learn 2 pm B ANNUALLY C EXPIRY 9.16% 11% rate of 9.16% vi. Jearn 2 simple interest expiry rate of 11% learn after 60 months If the principal is R100000; answer the following questions. 1. You are certain that the interest on the investment a person makes would be gained each month. What type of interest according to the advertisement will be gained throughout the investment period? (1) 2. Hence write the difference equation that governs the problem when r(in%) is the monthly interest rate (Do not show workings, simply write the ordinary difference equation) (1) 3. Solve the correct difference equation in question 2 subject to the correct initial condition. Show all workings. (7) estion 4 [12 marks] onsider an advertisement clip that you see from a magazine and that is shown in the gure below. The advertisement is that of a fixed deposit product/service provided by Bank ABC. Unfortunately your cup of coffee spills on the magazine, erasing some of the importand information from the add. You dry page of the advertisement and later put question marks and roman figures where information was erased by the coffee. FIXED DEPOSIT - EXPLAINED If I invest R100 000 for 60 months how much interest will learn? A B CO If I withdraw interest monthly. If I withdraw interest annually. If I withdraw interest at expiry. Invest from as little as R500! INTEREST PAYOUT FREQUENCY Interest rate per annum: Interest earned: Total payout: B THESE ARE MY OPTIONS A INTEREST MONTHLY C INTEREST AT EXPIRY INTEREST ANNUALLY ADDR TERM A MONTHLY 8.80% iv. V. rate of 8,80% ii. learn 2 pm B ANNUALLY C EXPIRY 9.16% 11% rate of 9.16% vi. Jearn 2 simple interest expiry rate of 11% learn after 60 months If the principal is R100000; answer the following questions. 1. You are certain that the interest on the investment a person makes would be gained each month. What type of interest according to the advertisement will be gained throughout the investment period? (1) 2. Hence write the difference equation that governs the problem when r(in%) is the monthly interest rate (Do not show workings, simply write the ordinary difference equation) (1) 3. Solve the correct difference equation in question 2 subject to the correct initial condition. Show all workings. (7)
