ECZ 2017 · O-Level Paper 1 — Approximations
Misozi and Filamba estimated the length of a line to be 9cm and 10cm respectively. If the true length of the line was 9.6cm, find Filamba's percentage error.
- A. 4.00%
- B. 0.42%
- C. 96%
- D. 4.17%
Verified working — step 1
Two steps: Filamba's absolute error first, then compare it with the TRUE length - divide by 9.6, not by 10.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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