ECZ 2019 · GCE Paper 1 — Earth Geometry
The diagram shows the points A(60°N, 30°W), B(30°S, 30°W) and C(30°S, 75°E) on the surface of the Earth. If the local time at B is 15 00, what is the local time at C?
- A. 08 00
- B. 22 00
- C. 18 30
- D. 12 00
Verified working — step 1
B is at 30°W and C at 75°E, so the longitude difference is 30° + 75° = 105°. Time difference = 105 ÷ 15 = 7 hours. C is east of B, so C is AHEAD: 15 00 + 7 h = …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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