Final answer:
The banker's statement about the formula for determining the time for an investment is incorrect.
Step-by-step explanation:
The banker's statement that the time for your investment is determined by the formula t = (I)/r is incorrect.
The correct formula to calculate the time for a simple interest investment is t = I/(P imes r).
The formula I = Prt is used to calculate the interest earned on an investment of P dollars at a given rate r over t years.