Tìm giúp em với ạ !!! ＞﹏＜

To solve this problem, we can follow these steps: Step 1: Calculate the amount of gasoline sold in the morning: The amount of gasoline sold in the morning is $$ of the total amount in the tank. We can calculate this by multiplying the total amount of gasoline by $$. So, the amount of gasoline sold in the morning is: $$ Step 2: Calculate the amount of gasoline left after the morning sale: The amount of gasoline left after the morning sale is the difference between the total amount and the amount sold in the morning. So, the amount of gasoline left after the morning sale is: $$ Step 3: Calculate the amount of gasoline sold in the afternoon: The amount of gasoline sold in the afternoon is 20% of the remaining gasoline. We can calculate this by multiplying the remaining amount by 20% (or 0.2). So, the amount of gasoline sold in the afternoon is: $$ Step 4: Calculate total gasoline sold: The total gasoline sold is the sum of morning sales and afternoon sales. So, total gasoline sold is: $$ Step 5: Calculate revenue earned: The revenue earned from selling gasoline can be calculated by multiplying the total liters sold by price per liter. So, revenue earned is: $$ Therefore, after selling gas in both morning and afternoon, cửa hàng bán được tổng cộng là **1040 lít xăng** và thu về được tổng cộng là **22,880,000 VND**.