public int driveTheCar(int distanceTravelled) {
		    if (isCarRented() == true || fuelInCar > 0){
			    int consumptionRate;
			    if (distanceTravelled <= 50){
			    	consumptionRate = distanceTravelled/10;
			    	return consumptionRate;
			    } else { 
			    	consumptionRate = ((distanceTravelled - 50)/15) + 5;
			    	return consumptionRate;
			    }
			} else {
				return 0;
			}

	}