charges 18% interest and calculates interest based on the average daily balance. Both cards have a $0 balance as of October 1 . The closing date is the end of the month for each card. on the account. (Round your answers to the nearest cent.) (a) Based on this information, calculate the interest (in \$) charged by each card for this purchase. Silver Card Gold Card (b) Which card is the better deal and by how much (in \$)? is the better deal by $