Calculate the interest due on the following credit card balances.
a)An unpaid balance of $1623.53 at a rate of 19.50% for 21 days.
b)An unpaid balance of 2639.99 at a rate of 22.95% for 30 days.
a)An unpaid balance of $1623.53 at a rate of 19.50% for 21 days.
b)An unpaid balance of 2639.99 at a rate of 22.95% for 30 days.