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Question
"L + W = 27"

How did you obtain the 27?

Answer I have is 6 feet by 21 feet.

Thanks again.

"A rectangular flower bed has a perimeter of 54 feet."
perimeter = 2L + 2W
2L + 2W = 54 ft
L + W = 27 ft
:::::
"Answer I have is 6 feet by 21 feet."
Okay, I misinterpreted the question, thinking that all eight beds were consolidated into one large bed.
The additional seven beds are consolidated into a bed that is separate from the original:

"7 additional beds were placed side by side next to the first bed."
Dimensions of the new bed: L by 7W

"The new bed is twice as long as the original bed."
7W = 2L

Substitution
7(27 - L) = 2L
189 - 7L = 2L
9L = 189
L = 21 ft
W = 27 - L = 6 ft

Sorry for my error.

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#### Janet Yang

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