10% intrest rate

The gravity on Mars is 3.711 m/s. Since you came from the Moon previously, where gravity is 1.62 m/s, you have tiny leg muscles. Not only do you look funny but walking around is a struggle. You want a Mars hopper to take you around and there are two propellant options, hypergolic and LOX-hydrocarbon. You will use the vehicle on average 10,000 km per year, with a useful life of 25 years for the LOX engine and 35 years for the Hypergol. Other comparative information is as follows LOX Hypergol Vehicle Cost $40,000 $70000 Fuel per liter Mileage in km/liter 50 55 Annual maintenance $15,000 $10,000 Annual operating costs $25,000 $15,00 Resale Value $20,000 $35,000 Which one is the best choice using annual worth to find it