Answer it with full solutions and explain it briefly thanks!

4. You own a car that is a few years old, and you have just replaced the brake pads at a cost of P2,500. But then you find out that the entire brake system is defective and also must be replaced. This will cost you an additional P 15,000. Alternatively, you could sell the car and buy another of comparable quality, but with no brake defects, by spending an additional P 16,000. What should you do: fix your old car, or sell it and buy another? Why