Answer:
The original price of petrol is R12.58 per litre and the new price is R13.28 per litre. To find the percentage increase in the price, we can use the following formula:
Percentage increase = ((new price - old price) / old price) x 100%
Substituting the values, we get:
Percentage increase = ((13.28 - 12.58) / 12.58) x 100%
Percentage increase = (0.70 / 12.58) x 100%
Percentage increase = 0.0557 x 100%
Percentage increase = 5.57%
Therefore, the percentage increase in the price of petrol is 5.57%.
Explanation: