
Bobby R. answered 08/26/19
Experienced Math, Science, and Computer Teacher
Since length is described in relation to the width, let's assign a variable of W to the width. Three times the width would then be 3W. 25 yards longer than that would be obtained by adding 25 to that...3W + 25. So, the length is 3W + 25 and the width is W.
To find the perimeter of a rectangle, you multiply 2 times the width and the length and add those. So, the perimeter would be 2(W) + 2(3W + 25), and we know that this adds up to 130. After multiplying, we end up with...
2W + 6W + 50 = 130
8W + 50 = 130 (added like terms together)
8W = 80 (subtracted 50 from both sides)
W = 10 (divided both sides by 8)
So, the width is 10 yards. Now, to find the length, substitute that value for W in 3W + 25, which gives us 3(10) + 25 = 30 + 25 = 55 yards.
Final answer: Width = 10 yards, Length = 55 yards