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

$t=\dfrac{I}{Pr}$
$\bf{\text{Solution Outline:}}$ To solve the given equation, $I=Prt$ for $t ,$ use the properties of equality to isolate the variable. $\bf{\text{Solution Details:}}$ Using the properties of equality to isolate the variable, the equation above is equivalent to \begin{array}{l}\require{cancel} I=Prt \\\\ \dfrac{I}{Pr}=\dfrac{Prt}{Pr} \\\\ \dfrac{I}{Pr}=t \\\\ t=\dfrac{I}{Pr} .\end{array}