A mixture of $$30$$ litres of paint is $$25\textbackslash\%$$ red tint, $$30\textbackslash\%$$ yellow tint and $$45\textbackslash\%$$ water. Five litres of yellow tint are added to the original mixture. What is the percentage of yellow tint in the new mixture? 
选项为:A:$$25\textbackslash\%$$  B:$$35\textbackslash\%$$  C:$$40\textbackslash\%$$  D:$$45\textbackslash\%$$  E:$$50\textbackslash\%$$  请回答其中一个选项.