A rectangular-shaped carpet that measures x feet by y feet is priced at $35. What is the cost of the carpet, in dollars per square yard? (1 square yard = 9 square feet)  Choose the correct option.
A) 180xy B) 180/(xy) C) 20xy D) 315/(xy) E) xy/180
The area of the carpet in feet is xy.   The area in square yards is xy / 9.   The price per square yard is 35 / (xy/9) = 315/(xy).   The answer is 315/(xy).
<result>D</result>
A rectangular-shaped carpet that measures x feet by y feet is priced at $35. What is the cost of the carpet, in dollars per square yard? (1 square yard = 9 square feet)