## Basic College Mathematics (10th Edition)

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