Civil Service Exam Reviewer · Percentage · hard

A length of 40 m was measured as 38 m. What is the percent error?

  1. 5.26%
  2. 2%
  3. 5%
  4. 50%

Answer

C. 5%

Solution

Percent error = |38 − 40| ÷ 40 × 100 = 5%.

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