$$8\div(8+32)=20\textbackslash\%$$. 
A salt solution is made by mixing $$8$$ grams of pure salt and $$32$$ grams of water. Find the percent concentration of the solution. 

  $$10\textbackslash\%$$ 
  $$15\textbackslash\%$$ 
  $$20\textbackslash\%$$ 
  $$25\textbackslash\%$$ 