$12-(4\times1)-1-4=3$  $\frac{3}{12}\times100\textbackslash\%=25\textbackslash\%$ 
A mother cut a cake into $$12$$ equal slices. Her four children had a slice each and she had one too. Later, a neighbour ate four slices. What percentage of the cake was left at the end of the day? 

  - $$5\textbackslash\%$$ 
  - $$10\textbackslash\%$$ 
  - $$25\textbackslash\%$$ 
  - $$35\textbackslash\%$$ 
  - $$50\textbackslash\%$$ 