Step 1 :The formula for simple interest is I = PRT, where P is the principal amount, R is the rate of interest, and T is the time in years. In this case, P = $500, R = 4% = 0.04, and T = 2 years. So, we need to calculate I = 500 * 0.04 * 2.
Step 2 :Substitute the values into the formula: I = 500 * 0.04 * 2
Step 3 :Calculate the result: I = 40.0
Step 4 :Final Answer: The simple interest paid on $500 at 4% for 2 years is \(\boxed{40}\).