ECZ 2025 · GCE Paper 1 — Earth Geometry
The diagram shows the positions of three towns A, B and C on the earth's surface. Town B is on longitude 40°W and town C is on longitude 65°E. What is the time difference between B and C?
- A. 105 hours
- B. 4 hours 20 minutes
- C. 7 hours
- D. 8 hours
Verified working — step 1
B and C sit on OPPOSITE sides of the Greenwich meridian, so their longitudes add - then every 15° of longitude is 1 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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