Using the difference in interest between the credit card and savings account from Part A, how much total interest could you save by putting all $500.00 instead of just $250.00 toward the credit card at the beginning of the month?
From Part A, we found that the interest saved by putting $250.00 toward the credit card at the beginning of the month instead of just making the minimum payment is $3.75.
If you were to put all $500.00 toward the credit card at the beginning of the month instead of just $250.00, you would save double the amount of interest, so the total interest saved would be $3.75 x 2 = $7.50.