Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 6 - Percent - Review Exercises - Page 464: 30

Answer

$\frac{unknown}{1280} = \frac{88}{100}$ Part = unknown Whole= 1280 Percent = 88

Work Step by Step

$\frac{Part}{Whole} = \frac{Percent}{100}$ Now 88 % of the door keys cut will operate properly. And there are 1280 keys cut. i.e. $\frac{unknown}{1280} = \frac{88}{100}$
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