Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-9 Percents - Practice and Problem-Solving Exercises: 24

Answer

25

Work Step by Step

$a=p\%\times b$ substitute $20=0.80\times b$ divide both sides by 0.80 $20\div0.80=0.80b\div0.80$ simplify $25=b$
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