Answer:
 32
Step-by-step explanation:
 witch plus witch plus witch = 45  ⇒  witch = 45/3 = 15
 broom plus broom plus a broom = 21  ⇒  broom = 21/3 = 7
 spoon plus spoon plus spoon = 12  ⇒  spoon = 12/3 = 4
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If we assume each witch on first line refers to a "loaded" witch that includes a broom and a spoon, then a "plain" witch is ...
 plain witch = witch - broom - spoon = 15 -7 -4 = 4
and the final total of interest is ...
 plain witch plus broom x spoon = 4 + 7 × 4 = 4 +28 = 32