Solve A = p + prt for t.

Question

Solve A = p + prt for t.

Answer 1

Mariana,

 

You posted similar problems which are all solved the same way.  I will work this one for you, but you should then try to work the others after reviewing this solution.

 

A = p + prt

 

You want to solve for t.  Do so by performing algebraic operations until t is by itself on one side of the equation, leaving you with

 

t = "some expression"

 

A = p + prt

 

Subtract p from both sides and get

 

A - p = prt

 

Divide both sides by pr and get

 

(A - p)/(pr) = t

 

There is your solution:

 

t = (A - p)/(pr)

 

Now you try to work the others.