Difficulty: Easy
Correct Answer: 2 km
Explanation:
Given data & coordinates
Start S = (0,0)Go north = x km ⇒ (0, x)Left to west 1 km ⇒ (−1, x)Left from west ⇒ south 2 km ⇒ (−1, x − 2)End is 1 km west of S ⇒ y must be 0 ⇒ x − 2 = 0 ⇒ x = 2.
Final Answer
2 km
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