Can you please explain it step by step with fourmelas? (don't use exel)

Credit screening Q - Tennindo Inc. is starting up its new, cost-efficient gaming system console, the GAME. Tennindo currently has 4,000 cash-paying customers and makes a profit of $60 per unit. Tennindo wants to expand its customer base by allowing customers to buy on credit. It estimates that credit sales will bring in an additional 1,200 customers per year but that there will also be a default rate on credit sales of 5%. It costs $260 to make a GAME, which retails for $320. If all customers (old and new) buy on credit, what is the cost of bad debt without credit screening? What are the increased profits by adding credit sales for customers with and without credit screening? Should Tennindo offer credit sales if credit screening costs $10 per customer? 7100