GCE Mathematics 2025 Objective — Question 15
Question 15 of 60 from the General Certificate of Education (GCE) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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The length of a classroom window was measured as 400cm. Find the percentage error if the actual length is 399.5cm.
- A. 0.125%Correct
- B. 0.135%
- C. 0.215%
Explanation
Error = 400-399.5 = 0.5cm. %error = (0.5/399.5)x100% = 0.125%.
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