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
$25=b$
Algebra 1
by Hall, Prentice
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 - Page 141: 24
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