Respuesta :

The perimeter of a rectangle is 2*L+2*W. Knowing that length is 99, we do 2*99 to get 198.Do 374-198, which is 176, we know that that is twice the length of the width. Therefore the width is 176/2, which is 88.
What is important in this problem is the equation for Perimeter 
Perimeter = 2Length + 2Width 
So 99 = length (l) 
374 = 2(99) + 2(w) 
374 = 198 + 2w 
Subtract 
176 = 2w 
Divide both sides by  2 
88 = w 
The Width is 88 yards