ECZ 2026 · GCE Paper 1 — Approximations
The absolute error of a number n is 5 and the relative error for the same number is 0.2. Find the value of n.
- A. 25
- B. 1
- C. 0.04
- D. 2.5
Verified working — step 1
Relative error compares the error with the size of the number: relative error = absolute error ÷ the number. Put in what is known and solve for n.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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