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7 November, 15:24

A scale has a percent error of 7% the scale reads the mass of a book as 450 g.

which statement described what the actual mass of the book could be

A. the actual mass of the book is between 315 g. and 585 g.

B the actual mass of the book is between 419 g and 482 g.

C. the actual mass of the book is between 443 g and 457 g.

D. the actual mass of the book is between 447 g and 453 g.

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  1. 7 November, 15:39
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    B, is the correct answer.

    7% of 450 is 31.5

    We add 31.5 to 450 to find out highest possible error, and subtract 31.5 from 450 to find out lowest possible error.
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