Facing East, you go right 20 m (South), then left 20 m (East), then right 20 m (South), then right 40 m (West) and finally turn right again and go 40 m. From your original position, which direction are you now?

Difficulty: Medium

Correct Answer: West

Explanation:


Introduction / Context:
This itinerary mixes several right/left turns. We compute the final coordinates and then determine the direction from the origin to the final point.



Given Data / Assumptions:

  • Start facing East.
  • Right 20 → South 20.
  • Left 20 → East 20.
  • Right 20 → South 20.
  • Right 40 → West 40.
  • Right 40 (turn then go) → from West, right to North → North 40.


Concept / Approach:
Use coordinates with origin at the start. Sum each axis displacement and interpret the final vector.



Step-by-Step Solution:
After first three legs: (20, −40).After West 40: (−20, −40).After North 40: (−20, 0).Relative to the origin, the point is 20 m West.



Verification / Alternative check:
Vertical displacement cancels to zero; only a 20 m West offset remains.



Why Other Options Are Wrong:
North/South/East do not match the computed negative x (West) position.



Common Pitfalls:
Misapplying the last “right,” which is from West to North before moving 40 m.



Final Answer:
West

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