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Emma needs 84 centimeters of ribbons. She measures and cuts a piece from a spool of ribbon. Later she finds out she has actually cut 80 centimeters of ribbon. What is her percent error? Write your answer
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Emma needs 84 centimeters of ribbons. She measures and cuts a piece from a spool of ribbon. Later she finds out she has actually cut 80 centimeters of ribbon. What is her percent error? Write your answer to the nearest whole percent.

User CyanAngel
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The percent error is 4%
User Vercelli
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