Xavier hires a car for four days whilst on holiday in Switzerland.
The currency of Switzerland is the Swiss Franc (CHF).
The car costs 99.40 CHF per day to hire.
The car uses 0.08 litres of petrol for every kilometre it travels.
Petrol costs 1.35 CHF per litre.
Over the four days, Xavier drives a total distance of 525 km.
(a) Work out how much Xavier spent in total on car hire and petrol.