2.4.2. Is this direct or indirect proportion? Give a reason for your answer. 2.5 Mpho wants to exchange South African rands for British pound. If R1 is worth 0,075199 pound, how many pounds will he get for R2 100 if he must pay an agent a commission of \( 1.5 \% \) ? 2.7. The price of petrol is increased from R12,58 per litre to R13,28 per litre.

Direct proportion means that two quantities increase or decrease together at a constant rate. In this case, as the value of South African rands increases, the amount of British pounds Mpho can exchange for it also increases. Hence, the relationship between rands and pounds is a direct proportion, as they move in tandem. To find out how many pounds Mpho can get for R2,100 after paying a 1.5% commission, first calculate the commission: \( 1.5\% \) of R2,100 is R31.50. So, the amount after commission is R2,068.50. Using the exchange rate, \( 0.075199 \) pounds per rand, Mpho will receive approximately £155.01 after the commission is deducted.