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Your friend says "Multiplying a number by 5 is a 500% increase" Describe and correct the error in your friend's reasoning.
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Your friend says "Multiplying a number by 5 is a 500% increase" Describe and correct the error in your friend's reasoning.

User Tatyana
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an increase is adding, not multiplying. they meant that 5 times a number is 500% of something. it would be a 400% increase as one plus four is five.
User Justin Emgarten
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