A rectangular-shaped carpet that measures x feet by y feet is priced at $42. What is the cost of the carpet, in dollars per square yard? (1 square yard = 9 square feet)  Choose the correct choice from the following choices:
A) xy/360  B) 9xy/40  C) 40xy/9  D) 378xy  E) 378/(xy)
The area of the carpet in feet is xy.   The area in square yards is xy / 9.   The price per square yard is 42 / (xy/9) = 378/(xy).   The answer is 378/(xy).
<result>E</result>
A rectangular-shaped carpet that measures x feet by y feet is priced at $42. What is the cost of the carpet, in dollars per square yard? (1 square yard = 9 square feet)