ECZ 2012 · O-Level Paper 1 — Earth Geometry
A plane flew north from town A (28 S, 20 E) to town B (32 N, 20 E) in 9 hours. Find the speed of the plane in knots.
- A. 3600 knots
- B. 40 knots
- C. 400 knots
- D. 240 knots
Verified working — step 1
Same meridian, opposite sides of the equator - latitudes ADD; then 1° = 60 nautical miles, and knots are nautical miles per hour.The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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