Question

If a river originates 200 meters above sea level and travels 400 kilometers to the ocean, what is the average gradient in meters per kilometer? 0.2 m/km 2 m/km 5 m/km 0.5 m/km

Answer 1

The answer is 0.5m/km

Just use 200 meters divided by 400 kilometers

200m/400km = 1m/2km = 0.5m/km

Hope this helps.