ECZ 2020 · O-Level Paper 1 — Earth Geometry
The diagram shows two towns A and B on the equator. A is on longitude 35°W and B is on longitude 40°E. Find the time at A when it is 18 00 hours at B.
- A. 23 00 hours
- B. 13 00 hours
- C. 11 00 hours
- D. 13 20 hours
Verified working — step 1
Longitude difference = 35° + 40° = 75°. Time difference = 75 ÷ 15 = 5 hours. A is west of B, so its time is earlier: 18 00 - 5 00 = …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.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question