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?
The assumption that Sara used to make her estimate is that she paid the full price for each item with her gift card.
To make her estimate that she has $8.00 left on her gift card, Sara assumed that she only bought the items mentioned in the question, and did not include any additional purchases or charges.
To find out the assumption Sara used to make her estimate, we need to calculate the total cost of the items she bought and compare it to the remaining balance of $8.00 on her gift card.
To calculate the total cost of the items Sara bought, we can multiply the quantity of each item by its respective price and sum them up.
Total cost of muffins = 6 muffins * $0.45 each = $2.70
Total cost of cookies = 2 boxes * $2.70 each = $5.40
Total cost of coffee cake = $3.72
Adding up the costs, we get:
$2.70 + $5.40 + $3.72 = $11.82
Now, to find the assumption Sara made, we compare the total cost of the items ($11.82) to the remaining balance on her gift card ($8.00).
If Sara estimated that she has $8.00 left on her gift card, then the assumption she made is that the total cost of the items she bought is less than or equal to the remaining balance on her gift card. In this case, her assumption would be incorrect because the total cost of the items she bought is $11.82, which is greater than $8.00.
Therefore, the assumption Sara made to estimate that she has $8.00 left on her gift card is that the total cost of the items she bought is lower than it actually is.