John bought two cars to use in his job as a salesperson. Both cars are purchased from a second-hand car yard. Car 1 costs $4,500 and Car 2 costs $10,000. While driving Car 1 home from the second-hand car yard, having just purchased it, the cars motor broke down and John had to spend $1,800 having the motor repaired. Car 2 performed well until John made a long sales trip to the outback six months after acquisition. John had to spend $1,500 repairing this car after it broke down because of the heat in the outback. Required:Which expenses are deductible under s.25-10 as repairs?