Rectangular Floors X and Y have equal area. If Floor X is 8 feet by 18 feet and Floor Y is 9 feet wide, what is the length of Floor Y, in feet?
Choose the correct choice from the following answers:
A) 13 1/2
B) 18
C) 18 3/4
D) 21
E) 16
The area of a rectangle is: Area = length x width   We are given that floor X is 8 feet by 18 feet and that floor Y is 9 feet wide. So we can say:   length of X = 8   width of X = 18   width of Y = 9   length of Y = n   We also can say:   Area of Floor X = Area of Floor Y   (length of X)(width of X) = (length of Y)(width of Y)   (8)(18) = 9n   (8)(2) = n   16 = n   Answer 16.
<result>E</result>
Rectangular Floors X and Y have equal area. If Floor X is 8 feet by 18 feet and Floor Y is 9 feet wide, what is the length of Floor Y, in feet?