試題詳解

20. You are going to buy a laptop for 1,000 USD. You can either withdraw this money from your bank account (it pays 10% interest yearly) or do it using one of the following credit schemes. Pick the scheme in which you will spend the most amount of money overall.
(A) Paying directly from you bank account.
(B) Credit at 0.1% compound interest per day, the only payment is at the end of the year.
(C) Credit at 12% interest rate per year, the only payment is at the end of the year.
(D) Credit at 0.5% compound interest per month, the only payment is at the end of the year.