Read the advertisement below. \begin{tabular}{|} Buy a Samsung J5 for only \\ R229 per month. \\ You have 24 months to pay. \\ No deposit is required. \end{tabular} 7.1 Calculate the total amount to be paid over a period of 24 months. 7.2 The monthly instalment, quoted in the advertisement, is calculated on a hire purchase agreement which charges interest of 7,5% p.a. on the cash price of the cellphone. Show that the price of the cellphone is R4 779,13. 7.3 Calculate the total interest paid over a period of 24 months if the cellphone is bought with this hire purchase agreement. 7.4 The cellphone is insured at 11,5% p.a of the cash price. The total insurance is calculated and then split up over 24 months. It is then added to the monthly instalment. Calculate the new monthly instalment if the customer wants to insure the cellphone. 7.5 The cost of the cellphone is subject to inflation and increases to a cash price of R5 100,00 after 2 years. Calculate the annual inflation rate