Emily is selling cookies and brownies at a school fundraiser. Each cookie costs $2 and each brownie costs $3. She has a total of $120 in sales from cookies and brownies combined. If she sold 20 more cookies than brownies, how many cookies did she sell?
Let x represent the number of brownies sold. Therefore, cookies sold can be represented as x + 20.
Using this information, form a linear equation based on the total sales:
$2(x + 20) + 3x = 120$
Determine the number of cookies sold, x + 20.