Sunita rode her scooty Northward, then turned left and then again rode to her left 4 km. She found herself exactly 2 km West to her starting point. How far did she ride Northwards initially?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 4 km
Facing North, a left turn makes her face West, and a second left turn makes her face South.
She rides North, turns left and rides West, then turns left again and rides 4 km South
She ends 2 km due West of the start, that is, level with it; so the West ride was 2 km
Ending level with the start means the 4 km South ride cancelled the North ride, so she rode 4 km North
