There are two c's. You must pay attention to capitalization, there's a lowercase c and an uppercase C which represent two different variables. Also, the W is capitalized which could make your answer incorrect if you don't use the same notation.
Solving for small c..

So it's the answer shown in the picture, but it should be a capital W instead of a lowercase w.
Answer:
<em>VAT</em><em> </em><em>=</em><em> </em><em>vat</em><em> </em><em>percent</em><em> </em><em>of</em><em> </em><em> </em><em>selling</em><em> </em><em>price</em><em> </em>
Step-by-step explanation:
VAT = vat % × s.p
hope this answer will help you