Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 2 - Equations, Inequalities, and Problem Solving - 2.4 Applications with Percent - 2.4 Exercise Set - Page 110: 69


a) $16%$, b)$29

Work Step by Step

a) Typical percentage problem: What percent ($n$, as a decimal number) of (the base amount $y$) is $x?$ Translated:$\quad n\cdot y=x$ --- Here, What percent ($n$, as a decimal number) of ($y=25$) is ($x=4$)$?$ Translated:$\quad n\cdot 25=4$ ... divide with $25$ $ y=0.16\qquad$ .... convert to percent notation, ( move the decimal point two places to the right and write a percent symbol.) $=16\%$ b) $25+4=\$ 29$
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