Solve this Direction Test question: A person starts from point O, walks 4 m North, then 4 m East, then 12 m South, and finally 19 m West. In which direction and at what shortest distance is the person from O?
Explanation
The verified answer to “Solve this Direction Test question: A person starts from point O, walks 4 m North, then 4 m East, then 12 m South, and finally 19 m West. In which direction and at what shortest distance is the person from O?” is South-West, 17 m, option B. The question-specific working supplied with the item states: Use coordinates with O = (0, 0), East as positive x and North as positive y. Horizontal calculation: the person moves 4 m East and 19 m West, so net x = 4 - 19 = -15 m. Vertical calculation: the person moves 4 m North and 12 m South, so net y = 4 - 12 = -8 m. The signs of (-15, -8) place the final point in the South-West direction. The shortest distance is straight-line displacement: √((-15)² + (-8)²) = √(225 + 64) = √289 = 17 m. Therefore option B, South-West, 17 m, is correct. The opposite-direction option is wrong because it reverses the verified coordinate signs. The option giving 23 m is wrong because it does not use the Pythagorean shortest distance. The West option is wrong because both non-zero coordinate components, or the exact zero component, determine South-West, not a neighbouring compass direction. This working identifies the relevant direction-distance map and connects the given information to the required result. To solve reliably, represent every term, person, seat, letter or operation in the order stated; then apply one rule consistently instead of guessing from the final pair alone. After applying the verified rule, the required value or position is South-West, 17 m. The alternatives North-East, 17 m, South-West, 23 m and West, 17 m fail because each breaks at least one stated condition, transition, direction or arithmetic step.