A person walks 12 km due north, then 15 km due east, after that 19 km due west and then 15 km due south. How far is he from the starting point ?
A
5 km
B
9 km
C
37 km
D
61 km
Correct Answer: Option A
Explanation
Okay, let's track the person's final position. The easiest way is to separate the North-South movements from the East-West movements.
1. **North-South:** The person goes 12