JAMB Mathematics 1995 Question 3

Question 3

Ratio, Percentages and Rates

The length of a notebook 15cm, was measured as 16.8cm. Calculate the percentage error to 2 significant figures.

  1. A.12.00%
  2. B.11.00%
  3. C.10.71%
  4. D.0.12%
Show the answer and explanation

Answer: A (12.00%)

Explanation

Error = 16.8 − 15 = 1.8cm. Percentage error = 1.8/15 × 100 = 12%.