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If a rod of length 250cm is measured as 255cm long in error, what is…

If a rod of length 250cm is measured as 255cm long in error, what is the percentage error in the measurement?

  • A.
    55
  • B.
    10
  • C.
    5
  • D.
    4
  • E.
    2
Correct Answer: Option E
Explanation

% error = (frac{text{Actual error}}{text{real value}}) x 100
= (frac{5}{250}) x 100
= 2%