Sara has a gift card for Six Town's Bakery and bought the following items.
6 muffins for $0.45 each
2 boxes of cookies for $2.70 each
1 coffee cake for $3.72
Sara estimates she has $8.00 left on her gift card. What assumption did Sara use to make her estimate?
A.
The gift card started with $7.00.
B.
The gift card started with $12.00.
C.
The gift card started with $15.00.
D.
The gift card started with $20.00.
B. The gift card started with $12.00.
To find the assumption that Sara used to make her estimate, let's calculate the total cost of the items Sara bought.
Cost of 6 muffins = 6 * $0.45 = $2.70
Cost of 2 boxes of cookies = 2 * $2.70 = $5.40
Cost of 1 coffee cake = $3.72
Total cost = $2.70 + $5.40 + $3.72 = $11.82
Since Sara estimates she has $8.00 left on her gift card, the assumption she used is that the gift card started with option D, $20.00. This way, subtracting the total cost of $11.82 from $20.00 leaves $8.18 remaining.
To answer this question, we need to determine the total cost of the items Sara bought and compare it to the remaining balance on her gift card.
First, let's calculate the total cost of the items Sara bought:
- 6 muffins at $0.45 each would cost: 6 * 0.45 = $2.70
- 2 boxes of cookies at $2.70 each would cost: 2 * 2.70 = $5.40
- 1 coffee cake for $3.72
Next, we can add up the cost of all the items:
2.70 + 5.40 + 3.72 = $11.82
Now, we compare the total cost of $11.82 to the remaining balance on Sara's gift card, which she estimates to be $8.00.
Since $11.82 is greater than $8.00, it means Sara's gift card had to have more money on it before she made these purchases.
Looking at the answer choices:
A. $7.00 is less than the estimated remaining balance of $8.00, so it can be ruled out.
B. $12.00 is greater than the estimated remaining balance of $8.00, so it can also be ruled out.
C. $15.00 is greater than the estimated remaining balance of $8.00, so it can be considered as a possible assumption Sara made.
D. $20.00 is much greater than the estimated remaining balance of $8.00, so it can be ruled out.
Therefore, the assumed starting balance for Sara's gift card that matches her estimate is C. $15.00.