ECZ 2020 · O-Level Paper 1 — Earth Geometry
The diagram below shows two towns A and B on the equator. A is on longitude 35°W and B is on longitude 40°E. A plane flying from A to B takes 5 hours. Find its speed.
- A. 750 knots
- B. 4500 knots
- C. 900 knots
- D. 180 knots
Verified working — step 1
On the equator, 1° of longitude = 60 nautical miles - and a knot is 1 nautical mile per hour.The full step-by-step working and final answer, plus the video lesson for this topic, 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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