Gasoline was $3.739 per gallon one week and $3.879 per gallon the next. By how much did the price change?
Understand the Problem
The question is asking for the difference in price between two weeks of gasoline prices, calculated by subtracting the first week's price from the second week's price.
Answer
The price change is $0.14.
Answer for screen readers
The price of gasoline changed by $0.14.
Steps to Solve
- Identify the prices for both weeks
The price of gasoline in the first week is $3.739.
The price in the second week is $3.879.
- Set up the calculation for price change
To find the change in price, subtract the first week's price from the second week's price:
$$ \text{Price Change} = \text{Second Week Price} - \text{First Week Price} $$
- Perform the calculation
Substituting in the values:
$$ \text{Price Change} = 3.879 - 3.739 $$
- Calculate the result
Now, perform the subtraction:
$$ \text{Price Change} = 0.140 $$
The price of gasoline changed by $0.14.
More Information
The change of $0.14 represents a 14-cent increase in the price of gasoline from the first week to the second week.
Tips
- Subtracting in the wrong order: Make sure to subtract the first week's price from the second week's price to find the correct change.
- Not aligning decimal points: When performing the subtraction, ensure that you align the decimal points accurately to avoid calculation errors.
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