Question 1007386
Let width be x
Let length be y

y = 2x + 10

2x + 2y = P
2x + 2(2x + 10) = 140
2x + 4x + 20 = 140
6x + 20 = 140
6x = 120
x = 20

y = 2x + 10 = 2(20) +10 = 50

Final Answer:
Width = 20 meters
Length = 50 meters