Original price: $$\frac{210}{(1-30\textbackslash\%)}=300$$.  Selling price after discount: $$210-15=195$$.  Discount rate: $$1-\left( {\frac{195}{300}} \right)=1-65\textbackslash\%=35\textbackslash\%$$. 
After a discount of $$30\textbackslash\%$$, the price of a bed is＄$$210$$. Besides, senior citizens are given a further discount of＄$$15$$. What is the percentage discount given to senior citizens for the bed? 
Options:
  $$30\textbackslash\%$$ 
  $$32\textbackslash\%$$ 
  $$35\textbackslash\%$$ 
  $$36\textbackslash\%$$ 