Question

A student estimated a mass to be 250g, but upon carefully measuring it, found the actual mass to be 240g. What is the percent error?

Answer 1

4.16%is the answer

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Answer 2

$\huge \mathfrak \blue{answer - }$

The actual mass is 240g but 250g was measured so the error was 10g in a mass of 240g so the % error is 10x100/240 = 4.1666 or 4.2% rounding up.