Question

the length of a rectangle field is 7 m less than 4 times the width. The perimeter is 136 m. Find the width and length of the rectangle.

Answer 1

Let width be x m 

perimeter = 2L + 2W
W = x and L =  4W - 7 = 4x - 7
so we have the equation

2(4x - 7) + 2x = 136

8x - 14 + 2x = 136
10x = 150
x = 15  

So the width = 15m and the length = 4(15) -7 = 53 m.  Answer