Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapters 1-7 - Cumulative Review Exercises - Page 529: 14


The package of 27 is the best buy.

Work Step by Step

To find the best buy compute the price per diaper for each package. Divide the package price by the number of diapers. $\frac{11.71\ dollars}{1\ pkg}\times\frac{1pkg}{27 diaper}=\frac{11.71\ dollars}{27\ diaper}=\frac{11.71\ dollars\div27}{27\ diaper\div27}=\frac{0.43\ dollars}{1\ diaper}$ $\frac{19.98\ dollars}{1\ pkg}\times\frac{1pkg}{31 diaper}=\frac{19.98\ dollars}{31\ diaper}=\frac{19.98\ dollars\div31}{31\ diaper\div31}=\frac{0.64\ dollars}{1\ diaper}$ $\frac{29.99\ dollars}{1\ pkg}\times\frac{1pkg}{56 diaper}=\frac{29.99\ dollars}{56\ diaper}=\frac{29.99\ dollars\div56}{56\ diaper\div56}=\frac{0.54\ dollars}{1\ diaper}$
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