let the width be y m
and each of the lengths x m
so 2x + 2y = 300
x + y = 150
y = 150-x
cost = 50(2x+y+
= 50(2x + 150-x)
= 50x + 7500
then 50x + 7500 = 12000
50x = 4500
x = 90
y = 150-90 = 60
the field is 60 m by 90 m
The perimeter of a rectangular field is 300 meters. This field is to be fenced along three sides only. The fencing along it's two lengths and one-width is to be done at $50 per meter. If the total cost of fencing is $12000, what are the field's dimensions?
1 answer