Calculate the Pay Back Period or years to recover the additional investment
(Hint: how many years will it take to get back the price difference between the two models based solely on your annual monetary saving?
2 years
.
1 year
.
1.5 years
.
1.33 years
.
Calculate the total monetary benefit for choosing the more energy efficient model (Hint: monetary savings over the appliance's lifetime minus the price difference of two models)