Help me with this ord problem!

Question

The formula P=A/1+i is used to determine what amount of principal P should be invested for one year at simple interest rate I in order to have A dollars after a year.  Solve the formula for i

Answer 1

P = A/1 + i

To solve for i, you need to isolate it. Since A/1 is positive, you need to subtract it from both sides. That gets i all by itself.