+24 The perimeter of the original rectangle is 66+4+4+1+1, or 76.
You then divide 76 by 4 to get 19.
Since the length is three times the width, you multiply 19 by three getting 57. Then the remaining 19 is the width.
The final answer: length: 57
Width: 19
(Remember to put units)
+37091 Original Length = L = 3w original width = w
NEW length = 3w-4 New width = w+1
Perimeter = 2 x L + 2 x w
2 (3w-4) + 2 (w+1) = 66
6w - 8 + 2w + 2 = 66
8w - 6 = 66
8w = 72
w = 9m = ORIGINAL width Original L = 3w = 27m
