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Situados en 36º 00’N 005º 50’W, calculamos el tiempo que tardaremos en llegar al puerto de Barbate (luz roja extremo del espigón) con velocidad de 14 nudos.Positioned at 36º 00' N, 005º 50' W, calculate how many minutes it will take to reach Barbate port (red light at the end of the breakwater) at a speed of 14 knots:
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Correct answer: b) 50 minutes.
Why it is correct
The charted distance from 36º 00′ N, 005º 50′ W to Barbate breakwater red light (36º 11.3′ N, 005º 55.3′ W) is 11.7 miles. At 14 knots, the time required is (11.7 / 14) × 60 ≈ 50 minutes.
Why the others are not
- a) Does not match the time needed to cover 11.7 miles to Barbate at 14 knots.
- c) Does not match the time needed to cover 11.7 miles to Barbate at 14 knots.
- d) Does not match the time needed to cover 11.7 miles to Barbate at 14 knots.
How to work it out in the exam
- Measure the distance from 36º 00′ N, 005º 50′ W to Barbate red light: 11.7 miles.
- Divide by 14 knots and multiply by 60: (11.7 / 14) × 60 = 50 minutes.
Where this question comes from
- Región de Murcia · 2019 · 2ª convocatoria · PER Tipo 1 · question 42 Official paper · Official answer key
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Pending instructor review. Machine translation, not reviewed.