Question

The length of a rectangle is 7 meters longer
than its width. What is the width of this
rectangle if its perimeter is equal to 130
meters?

Answer 1

P = 2(l+w)
Let x be the width.
130 = 2(x+(x+7))
130 = 2x + 2x + 14
116 = 4x
x = 29
The width of the rectangle is 29.