A policeman walks 9 km east, then 12 km south, then 9 km west. Shortest distance from start? MCQ with Answer and Explanation

Explanation:
West 5, left (south) 5, left (east) 5 -> net south 5, west 0? Wait: west 5, then south 5, then east 5 => east-west cancel, net south 5. So south. Not an option. I'll adjust: West 5, left (south) 5, left (east) 5 -> net south 5, east 0 => south. Option not there. Change: West 5, left (south) 5, right (west) 5 -> net west 10, south 5 -> South-west. I'll set: Woman walks 5 m west, turns left walks 5 m, turns right walks 5 m. Then net west 10, south 5 -> South-west.

Explanation:
Net north 4, east 4 -> North-east.

Explanation:
Ritu walks 30 km North, 15 km East, and 30 km South. The North and South movements cancel each other out. She is exactly 15 km East of her starting point.