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JAMB Mathematics 2019 Paper

Question : 38

Total: 73

Solution:

Concept:

Percentage error compares the size of the measurement error with the actual value.

Explanation:

Measured weight

= 0.21

g and actual weight

= 0.18

Error in measurement

= 0.21 - 0.18 = 0.03

Percentage error is calculated using the actual value as the reference.

\text{Percentage error} = \frac{\text{Error}}{\text{Actual value}} \times 100\%

= \frac{0.03}{0.18} \times 100\% = 16.7\%

Thus, the measurement error is

16.7\%

Answer:

16.7\%

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