$250\times 40\textbackslash\%$ 
A vase was being sold at the price of $250$ dollars. The store decides to sell it with a $40\textbackslash\%$ discount. If you buy the vase now, how much will you save? 
a: $$150$$ 
b: $$100$$ 
c: $$80$$ 
d: $$50$$ 