Answer:
46
Explanation:
She has baked 18 cakes already
She buys 28 additonal sticks of butter, it takes one stick of butter to make a cake. 28 sticks of butter = 28 additonal cakes
18 cakes- baked
+
28 - cake can be baked with the 28 addtional sticks of utter
46 total cakes can be baked.