The typical family living in Perth consume 10 hamburgers, 7 pairs of sneakers and 20 litres of mineral water. In 2021, hamburgers cost $10 each, sneakers cost $40 per pair and mineral water cost $3 per litre. In 2022, the price of hamburgers increased to $14 each, while the price of sneakers and mineral water remained the same. Between 2021 and 2022, a typical family's cost of living: Increased by approximately 9%. Increased by 40%. Remained the same. Decreased by approximately 9%