Answer
30.9
Work Step by Step
Use cross multiplication to solve for x.
$\frac{0.07}{0.3}=\frac{7.2}{n}$
$0.07n=(7.2)(0.3)$
$0.07n=2.16$
$0.07n\div0.07=2.16\div0.07$
$n=30.9$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.