Answer:
w=10
Step-by-step explanation:
Let original width of pen be w feet.
New width of pen = (w+2) feet
(w+2)×9=108
w+2=108÷9
=12
w=12-2
=10
Answer:
9(w + 2) = 108
Step-by-step explanation:
A = l * w = 9w
A' = l * w' = 9w' = 9(w + 2) = 108
The original width, w, of the pen was 10 feet. Thus, the original area was 9 * 10 = 90 feet.
The final width was 10 + 2 = 12 feet
12 * 9 = 108