Question

Got cut off while saying thanks to last tutorial t bg at helped me.

Answer 1

We are given the following equation.

$A=p+prt$

we are asked to find an equation for "t". To do that, we are going to solve for "t", first by subtracting "p" on both sides, like this:

$\begin{gathered} A-p=p-p+prt \\ A-p=prt \end{gathered}$

Now we will divide both sides of the equation by "pr"

$\begin{gathered} \frac{A-p}{pr}=\frac{prt}{pr} \\ \frac{A-p}{pr}=t \end{gathered}$

A thus we found a relationship for "t".