The price of gasoline drops from $1.00 per gallon to $0.95 per gallon.

**What is the percentage of decrease?**This question is required.*

To calculate the percentage decrease in the price of gasoline, you can follow these steps:

1. **Find the decrease in price**:  
   Subtract the new price from the original price to find the decrease.

   \[
   \text{Decrease} = \text{Original price} - \text{New price}
   \]
   \[
   \text{Decrease} = 1.00 - 0.95 = 0.05
   \]

2. **Calculate the percentage decrease**:  
   Divide the decrease by the original price and then multiply by 100 to convert it to a percentage.

   \[
   \text{Percentage decrease} = \left(\frac{\text{Decrease}}{\text{Original price}}\right) \times 100
   \]
   \[
   \text{Percentage decrease} = \left(\frac{0.05}{1.00}\right) \times 100 = 5\%
   \]

So, the percentage decrease in the price of gasoline is **5%**.

Would you like more details or have any questions?

Here are 5 related questions that expand on this topic:

1. If the price of gasoline drops further from $0.95 to $0.85 per gallon, what is the new percentage decrease from the original price of $1.00?
2. If the price of gasoline increases back to $1.00 per gallon after dropping to $0.95, what is the percentage increase?
3. How would you calculate the percentage decrease if the price dropped from $1.20 to $0.95 per gallon?
4. If the price of gasoline was $2.00 per gallon and decreased by 15%, what would be the new price?
5. What is the percentage decrease if a product's price goes from $50 to $45?

**Tip:** To calculate percentage changes effectively, always use the formula $\text{Percentage Change} = \frac{\text{Change in Value}}{\text{Original Value}} \times 100$.

Learn how to calculate the percentage decrease in the price of gasoline from $1.00 to $0.95 per gallon using simple arithmetic operations. This problem illustrates the concept of percentage decrease and is suitable for students in Grades 5-8.

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