A person is walking from Mali to Pali, which lies to its north-east. What is the distance between Mali and Pali?

I. When the person has covered $$\frac{1}{3}$$ the distance, he is 3 km east and 1 km north of Mali.

II. When the person has covered $$\frac{2}{3}$$ the distance, he is 6 km east and 2 km north of Mali.

Considering first statement alone, we can calculate 1/3rd of the complete distance as $$\sqrt{1^2 + 3^2}$$ Hence, we can evaluate complete distance too.

Considering second statement alone, we can calculate 2/3rd of the complete distance as $$\sqrt{2^2 + 6^2}$$ Hence, we can evaluate complete distance too.

So answer will be B as complete distance can be calculated by using any of the statement alone.