n the first hour after opening, a bakery sold 80 muffins. However, in the second hour, they only sold 64 muffins.

What is the percent decrease in muffin sales?
A.16% decrease
B.40% decrease
C.15% decrease
D.20% decrease

To calculate the percent decrease in muffin sales from the first hour to the second hour, follow these steps:

1. **Find the difference in sales**:  
   \[
   80 - 64 = 16
   \]

2. **Divide the difference by the original sales (first hour's sales)**:  
   \[
   \frac{16}{80} = 0.2
   \]

3. **Convert the decimal to a percentage** by multiplying by 100:  
   \[
   0.2 \times 100 = 20\%
   \]

Thus, the percent decrease in muffin sales is **20%**.

The correct answer is **D. 20% decrease**.

Would you like more details or have any questions?

Here are 5 related questions:
1. How do you calculate a percent increase?
2. What is the formula for percent change?
3. If the bakery sold 100 muffins in the second hour, what would be the percent increase from the first hour?
4. How do you compare two percentages?
5. What are common applications of percent change in daily life?

**Tip**: Always compare the change to the original value when calculating percentage increases or decreases.

In the first hour after opening, a bakery sold 80 muffins. However, in the second hour, they only sold 64 muffins. What is the percent decrease in muffin sales?
A. 16% decrease
B. 40% decrease
C. 15% decrease
D. 20% decrease

Learn how to calculate the percent decrease in muffin sales from 80 to 64 in this step-by-step solution. This problem introduces basic arithmetic concepts and the percentage decrease formula, perfect for students in Grades 5-7.

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