HELP! A scale has a percent error of 7%. The scale reads the mass of a book as 450 g. Which statement describes what the actual mass of the book could be?

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asked Feb 6, 2017 101k views

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Indranil Sarkar · Answer 1 · 2017-02-10T18:14:21+0000

Well, 7% of 450 is 31.5. The error can go either way (too much or too little) so 450 - 31.5 = 418.5. We also do 450 + 31.5 = 481.5. The statement would be

Book mass = >418.5 and <481.5.

(This could be wrong, I haven't done this much before.)

HELP! A scale has a percent error of 7%. The scale reads the mass of a book as 450 g. Which statement describes what the actual mass of the book could be?

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