This is a question from my Financial Math class:

This is a question from my Financial Math class: currently there are stores that offer 0% interest on 12 months to buy electronics or goods, in lots of these cases, if you decide to pay the full price cash upfront they do not offer a discount on the price of the good, meaning it's the same price if you buy it cash than if you buy it with the financing. Is this practice correct? Give an example as to why yes or why not. If you were to do the financing and you pay in 8 months instead of 12, are you paying the same? This excercise is to comprehend the value of money over time.