Question

for every 3 packages that marcella wraps, she uses $\frac{1}{2}$ of a roll of wrapping paper. if she uses 2 $\frac{1}{2}$ rolls of wrapping paper, how many packages has she wrapped?

Explanation:

Step1: Find packages per roll

First, calculate how many packages Marcella can wrap with 1 full roll. Since 3 packages use $\frac{1}{2}$ roll, multiply by 2:
$3 \times 2 = 6$ packages per roll.

Step2: Calculate total packages

She uses $2\frac{1}{2} = 2.5$ rolls. Multiply packages per roll by total rolls:
$6 \times 2.5 = 15$

Answer:

15