The formula I=PRT gives the amount of simple interest I earned by principal P at an annual interest rate R over T years. Solve this formula for P.
divide both sides by RT
P = I/(RT)
To solve the formula I=PRT for P (the principal), we need to isolate P on one side of the equation. Here's how:
1. Start with the given formula: I = PRT.
2. Divide both sides of the equation by RT to isolate P: I / (RT) = P.
So, P = I / (RT).
To find the principal 'P', you need to know the simple interest 'I', the interest rate 'R', and the time period 'T'. Once you have those values, you can plug them into the equation and calculate the principal.