The perimeter of a rectangular garden is 360 ft. What is the length of the garden?
1) the length of the garden is twice the width
2) the difference between the length and width of the garden is 60 ft
I don't struggle with 1. Clearly 2(l+w)=360 and we clearly have a substitution for w (w=l/2) but in the Official Answer, it appears as if we are to implicity assume that l>w to prove that B is sufficient. Why?
OA is D. I don't see how 2 can stand alone - L could be 60 or 120, depends on how you interpret difference.
given 2 * (l+w) = 360. what is l?
st 1) l=2w . substituting in the above equation we can get l
st 2) l-w = 60. solving for the 2 equations, we can get l
difference between length and width is 60 mean l-w = 60.