Final answer:
To find the number of wreaths sold, set up an equation using the information given. Solve the equation to find the value of w. Alaina sold 9 wreaths.
Step-by-step explanation:
To find the number of wreaths sold, we need to set up an equation using the information given. Let's assume that Alaina sold w wreaths.
The total amount she made from selling poinsettias is 15 * $20 = $300. The total amount she made from selling wreaths is w * $27.
According to the information provided, the total amount she made is $543. So we can set up the equation: $300 + w * $27 = $543.
Simplifying the equation, we have w * $27 = $543 - $300 = $243. Dividing both sides of the equation by $27, we get w = $243 / $27 = 9.
Therefore, Alaina sold 9 wreaths.