A shirt goes on sale for 50% of its original price. One week later, the sale price is marked down 10%. The final price is what percent of the original price?	Select the correct option:	A) 72 %	B) 70 %	C) 52 %	D) 50 %	E) 45 %

Rationale: "just assume original price is 100 . sale price = 50 then it is marked down by 10 % = 50 - 5 = 45 . hence it is 45 % od the original price . hence answer is e ."
Answer: E