A restaurant uses a 15-pound of flour in 4 days, each day, the bag of flour gets lighter as more flour is used.

This means on average, the restaurant uses 15/4 = 3.75 pounds of flour each day. So, each day, the bag of flour gets 3.75 pounds lighter.

To find out how much flour is used each day, we need to divide the total amount of flour used (15 pounds) by the number of days (4).

Step 1: Calculate the amount of flour used each day:
15 pounds ÷ 4 days = 3.75 pounds

Therefore, the restaurant uses approximately 3.75 pounds of flour each day.

To find out how much flour is used each day, you would need to divide the total amount of flour (15 pounds) by the number of days (4).

Mathematically, you can calculate the amount of flour used per day using the formula:

Amount of flour used per day = Total amount of flour ÷ Number of days

In this case, the total amount of flour used is 15 pounds, and the number of days is 4.

So, the calculation would be:

Amount of flour used per day = 15 pounds ÷ 4 days = 3.75 pounds

Therefore, the restaurant uses approximately 3.75 pounds of flour each day.