The principal P is borrowed and the loans future value A at time t is given. Determine the loans simple interest rate r.

P= $3000.00 A= 3180.00 t= 2years

We can use the formula for the future value of a loan to determine the interest rate:

A = P(1 + rt)

Substituting the given values:

3180 = 3000(1 + r * 2)

Divide both sides by 3000:

1.06 = 1 + 2r

Subtract 1 from both sides:

0.06 = 2r

Divide both sides by 2:

0.03 = r

Therefore, the simple interest rate is 3%.