Answer
30.9
Work Step by Step
Use cross multiplication to solve for x.
$\frac{0.07}{0.3}=\frac{7.2}{n}$
$0.07n=(7.2)(0.3)$
$0.07n=2.16$
$0.07n\div0.07=2.16\div0.07$
$n=30.9$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Review - Page 460: 26
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