what should be the length and the width of the field in feet?

Question

A farmer needs to fence a rectangular piece of land. She wants the length of the field to be 90 feet longer than the width. If she has 1,220 feet of fencing material, what should be the length and the width of the field in feet?

Answer 1

Assuming, the width is X feet, then, the length is X+90

A rectangle has two width or 2X, and two length or 2(X+90).

The fencing material will cover 2X+2(X+90)= 1,220 feet

2x+2x+180=1,220

4x=1040

x=260 feet this is width

The length will be 260+90=350 feet