## Basic College Mathematics (10th Edition)

(a) $\frac{1}{4}$ or 25% or 0.25 (b) $\frac{3}{4}$ or 75% or 0.75
(a) Reduce $\frac{160}{640}$ by 160 to get $\frac{1}{4}$ $\frac{1}{4}$=0.25=25% (b) 1-$\frac{1}{4}$=$\frac{3}{4}$ $\frac{3}{4}$=.75=75%