Name: SAT Math Help & School Math Mastery
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#36118

formulas

equations

algebra

medium

60 sec

The amount $A$ in an account after $t$ years, with principal $P$ and annual interest rate $r$ (as a percentage), is given by the formula $A = P + \frac{P r t}{100}$ . Which of the following expresses the time $t$ in terms of $A$ , $P$ , and $r$ ?

A.

$t = \frac{100 ( A - P )}{P r}$

B.

$t = \frac{100 A - P}{P r}$

C.

$t = \frac{A - P}{100 P r}$

D.

$t = \frac{P r}{100 ( A - P )}$