1. If you want to open a car repair shop in your town, and suppose you know that there are 100,000 cars in the city, and the average repair for their cars is around 50 dollars, and because of competitors, you can only take 4% of the market share. Then what is your expected sales (forecast sales)?

( * Please show the steps *)

2. If a company's income statement shows that the total sales (revenue) for 2019 is $500,000, and the total cost is $400,000, then what is the net profit margin?

(* please show steps *)