A bricklayer measured the length of a wall and obtained 4.10m. If the actual length...
MATHEMATICS
WAEC 1992
A bricklayer measured the length of a wall and obtained 4.10m. If the actual length of the wall is 4.25m, find his percentage error.
- A. 3 9/17%
- B. 3 27/41%
- C. 15%
- D. 35 5/17%
Correct Answer: A. 3 9/17%
Explanation
Error = 4.25 - 4.10 = 0.15
% error = \(\frac{0.15}{4.25} \times 100%\)
= \(\frac{15}{\frac{17}{4}} = \frac{15 \times 4}{17}\)
= \(3\frac{9}{17} %\)
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *