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? Choose the correct choice.
A) 72% B) 70% C) 52% D) 50% E) 45%
Just assume original price is 100.   Sale price = 50   Then it is marked down by 10% = 50-5= 
<gadget id="calculator">50-5</gadget>
<output>45</output>
45.   Hence it is 45% od the original price. Hence answer is 45%.
<result>E</result>
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?