Answer:
She sold 9 wreaths
Step-by-step explanation:
Let's name things:
Be wreaths called w, and poinsettias called p, then each w=$27 and each p=$20.
Now, let's write some helpfull equation:
[tex]15p+xw=\$543[/tex]
where p and w are already defined, and the equation represents the hypothesis (she sold 15 poinsettias, an unknown quantity of wreaths called x, and made $543).
Then, from the equation we clear x
[tex]15p+xw=\$543\Leftrightarrow (15)(20)+x(27)=543\Leftrightarrow x=\frac{543-(15)(20)}{27}[/tex]
therefore
[tex]x=9[/tex]
is the quantity of wreaths that Alaina sold.
