Answer:
1) assuming that the credit card company's payments are immediate (1 business day)
April 30,2015, net credit and debit card sales
Dr Cash 13,580
Cr Sales revenue 13,580
2) assuming that the credit card company's payments are immediate (1 business day)
April 30,2015, gross credit and debit card sales
Dr Cash 13,580
Dr Credit card fees 420
Cr Sales revenue 14,000