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.
Which one is correct
The correct assumption that Sara used to make her estimate is option C: The gift card started with $15.00.
To determine the assumption Sara used to make her estimate, we need to calculate the total cost of the items she bought and subtract it from the $8.00 remaining on the gift card.
The total cost of the muffins is 6 * $0.45 = $2.70.
The total cost of the boxes of cookies is 2 * $2.70 = $5.40.
Therefore, the total cost of all the items she bought is $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 $11.82 + $8.00 = $19.82.
Therefore, the correct assumption is D. The gift card started with $20.00.
To find the assumption Sara used to make her estimate, we need to calculate the total cost of the items she bought and subtract that from the initial value of the gift card.
The cost of the 6 muffins is 6 * $0.45 = $2.70.
The cost of the 2 boxes of cookies is 2 * $2.70 = $5.40.
The cost of the coffee cake is $3.72.
Therefore, the total cost of the items Sara bought is $2.70 + $5.40 + $3.72 = $11.82.
To estimate the remaining value on her gift card, Sara subtracted the total cost of the items she bought from $8.00.
$8.00 - $11.82 = -$3.82
Since having a negative value on a gift card doesn't make sense, we can conclude that the assumption Sara used to make her estimate is that the gift card started with $12.00 (option B).