The perimeter of a rectangular piece of land is 112 meters, and its width is three fifths of its length?

The perimeter of a rectangular piece of land is 112 meters, and its width is three fifths of its length?

Let the length be x (m) and the width be 3 / 5 * x (m)
2*X+2*（3/5*X）=112
solve equations
X=35（m）
So the length is 35m and the width is 3 / 5 * 35 = 21m
the measure of area:
S = length * width = 35 * 21 = 735 M2

The perimeter of a rectangular vegetable field is 320 meters, the length is 112 meters, the width is how many meters, and the area is how many square meters?

320/2=160
160-112 = 48 wide
48X112=5376