If an item that originally sold for z dollars was marked up by x percent and then discounted by y percent, which of the following expressions R represents the final price of the item?	Choose one
A) R=(10,000z + 100z(x – y) – xyz)/10,000 B) R=(10,000z + 100z(y – x) – xyz)/10,000 C) R=(100z(x – y) – xyz)/10000 D) (100z(y – x) – xyz)/10000 E) 10000 /(x – y)
-R=(10,000z + 100z(x – y) – xyz)/10,000-   z=Original Price   x=MU   y=MD   New price with MU:   z(x/100+1)   New price with MD:   z[(x/100+1)(-y/100+1)]   Solvingâ€¦   =z[((x+100)/100)((-y+100)/100)]   =z(x100-xy+10000-100y)/10000   =(zx100-xyz+10000z-100yz)/10000 --&gt; similar to R=(10,000z + 100z(x – y) – xyz)/10,000
<result>A</result>
If an item that originally sold for z dollars was marked up by x percent and then discounted by y percent, which of the following expressions R represents the final price of the item?