Write and solve an equation that can be used to find the width of a backyard that is 120 feet long and has a perimeter of 330 feet

Answer 1

To solve this problem you need to know the formula for perimeter.

2l + 2w = p

where l is the length, w is the width and p is the perimeter.

You know the length and the perimeter.

l = 120

p = 330

So, you can plug it into your equation.

2(120) + 2w = 330, next you'll need to multiply 2x120

240 + 2w = 330, next you'll need to subtract 240 from each side

2w = 90, next you'll need to divide each side by 2.

w = 45