Answer:
Interest portion = 80.2
Explanation:
Present Value of Payments = P=S/(1+i)^n
P = present Value
S= Future Value
i = Interest
N= time
Amount of third payment = 500
So the Present Value of The 3rd payment is = 500/(1+6%)^3 =419.80
Third installment = 500 this is future value so it contain the interest at 6%
Present Value = 419.8
Time Value of money or Interest = 500-419.8 = 80.2