Amy gave the cashier $60 to pay for 3 giant dog pillows. The cashier gave her $6.15 in change. Each dog pillow cost the same amount. What is the cost in dollars and cents for each... Amy gave the cashier $60 to pay for 3 giant dog pillows. The cashier gave her $6.15 in change. Each dog pillow cost the same amount. What is the cost in dollars and cents for each dog pillow?
Understand the Problem
The problem describes a transaction where Amy buys 3 dog pillows and receives change. We need to calculate the cost of each dog pillow by first finding the total cost of the pillows and then dividing by the number of pillows.
Answer
$9.49
Answer for screen readers
Each dog pillow cost $9.49.
Steps to Solve
- Calculate the total cost of the pillows
To find the total cost of the pillows, subtract the change Amy received from the amount she paid with:
$$ \text{Total cost} = \text{Amount paid} - \text{Change received} $$ $$ \text{Total cost} = $50.00 - $21.53 = $28.47 $$
- Calculate the cost of each pillow
To find the cost of each pillow, divide the total cost by the number of pillows: $$ \text{Cost per pillow} = \frac{\text{Total cost}}{\text{Number of pillows}} $$ $$ \text{Cost per pillow} = \frac{$28.47}{3} = $9.49 $$
Each dog pillow cost $9.49.
More Information
This type of problem is a basic application of arithmetic operations (subtraction and division) in a real-world scenario.
Tips
A common mistake is to divide the amount paid ($50.00) by the number of pillows, or dividing the change received by the number of pillows. Remember to first find the actual cost of the pillows by subtracting the change from the amount paid.
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