## Intermediate Algebra (12th Edition)

Published by Pearson

# Chapter 1 - Section 1.2 - Formulas and Percent - 1.2 Exercises: 21

#### Answer

$t=\dfrac{A-P}{Pr}$

#### Work Step by Step

Using the properties of equality, in terms of $t ,$ the given formula, $A=P(1+rt) ,$ is equivalent to \begin{array}{l}\require{cancel} A=P+Prt \\\\ A-P=Prt \\\\ \dfrac{A-P}{Pr}=t \\\\ t=\dfrac{A-P}{Pr} .\end{array}

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