Answer:
To calculate the cost of travelling 110 km with a car that consumes N litres per kilometre, when petrol costs 72 cents per litre, use the formula:
Cost = (N × 110) × 0.72
Where:
- N is the car's gas consumption in litres per kilometre
- 110 is the distance travelled in kilometres
- 0.72 is the cost of petrol in dollars per litre
For example, if the car consumes 0.05 litres per kilometre, the total cost would be:
Cost = (0.05 × 110) × 0.72 = 5.5 × 0.72 = $3.96
