Test Index

WAEC Mathematics 2022 Paper

© africaexams.com

Question : 12

Total: 47

The length of a piece of stick is 1.75 m. A boy measured it as 1.80 m. Find the percentage error

4 $\;\frac{4}{7}$
2 $\;\frac{6}{7}$
2 $\;\frac{7}{9}$
4 $\;\frac{7}{9}$

Solution:

Error = 1.80 - 1.75 = 0.05

%error = $\;\frac{error}{original\;length}$

= $\;\frac{0.05\;*\;100}{1.75}$

= 2.85 or 2 $\;\frac{6}{7}$

© africaexams.com

Go to Question:

Prev Question

Next Question