The tourist traveled 5/9 of the entire path. How long is the intended path if there are 900 km left.

The tourist traveled 5/9 of the entire path. How long is the intended path if there are 900 km left
Since the tourist has already traveled 5 parts out of 9, it means that he has 4 more parts left to the end. The rest of 900 km means 4/9. Let’s make the ratio and decide.
4/9 h 900 km 5/9 h x km
crosswise comes out
x = 900 * 5/9: 4/9
x = 500: 4/9 = 1125 km traveled
to find all the way 1125 + 900 = 2025 km
Answer: 2025km