Answer:
454.30 CHF
Explanation:
First, let's calculate the car hire cost:
Car hire cost per day = 99.40 CHF
Number of days = 4
Total car hire cost = Car hire cost per day * Number of days
Total car hire cost = 99.40 CHF * 4
Total car hire cost = 397.60 CHF
Next, let's calculate the petrol cost:
Petrol consumption per kilometer = 0.08 litres
Distance traveled = 525 km
Petrol cost per litre = 1.35 CHF
Total petrol consumption = Petrol consumption per kilometer * Distance traveled
Total petrol consumption = 0.08 litres/km * 525 km
Total petrol consumption = 42 litres
Total petrol cost = Total petrol consumption * Petrol cost per litre
Total petrol cost = 42 litres * 1.35 CHF/litre
Total petrol cost = 56.70 CHF
Finally, let's calculate the total cost:
Total cost = Total car hire cost + Total petrol cost
Total cost = 397.60 CHF + 56.70 CHF
Total cost = 454.30 CHF
Therefore, Xavier spent a total of 454.30 CHF on car hire and petrol over the four days.