One day, Anya runs 12 km at a speed of $$\(x \mathrm{~km} / \mathrm{h}\)$$. The next day she walks 10 km at a speed of $$\((x-4) \mathrm{km} / \mathrm{h}\)$$. Find the time Anya spends running. h

Answer:

Knowledge points:

Solution: