Using the following prices, calculate the unit price to determine how much it would cost for 7 muffins and 14 juice boxes.

$7.74 for 6 muffins
$5.52 for 8 juice boxes
a.
$18.69
b.
$19.89
c.
$21.91
d.
$26.52

1 answer

To determine the total cost for 7 muffins and 14 juice boxes, we need to calculate the unit price for each item and then find the total cost.

Step 1: Calculate the unit price for muffins.

  • Price for 6 muffins = $7.74
  • Unit price for muffins = Total price / Number of muffins \[ \text{Unit price for muffins} = \frac{7.74}{6} \approx 1.29 \text{ (rounded to two decimal places)} \]

Step 2: Calculate the cost for 7 muffins. \[ \text{Cost for 7 muffins} = 7 \times 1.29 \approx 9.03 \]

Step 3: Calculate the unit price for juice boxes.

  • Price for 8 juice boxes = $5.52
  • Unit price for juice boxes = Total price / Number of juice boxes \[ \text{Unit price for juice boxes} = \frac{5.52}{8} \approx 0.69 \text{ (rounded to two decimal places)} \]

Step 4: Calculate the cost for 14 juice boxes. \[ \text{Cost for 14 juice boxes} = 14 \times 0.69 \approx 9.66 \]

Step 5: Calculate the total cost. \[ \text{Total cost} = \text{Cost for muffins} + \text{Cost for juice boxes} = 9.03 + 9.66 \approx 18.69 \]

The total cost for 7 muffins and 14 juice boxes is approximately $18.69.

Thus, the correct answer is: a. $18.69