Problema Solution
The length of a rectangular piece of land is 90 yards more than three times its width. The perimeter is 780 yards. Find its dimensions
Answer provided by our tutors
let
l = the length of the rectangular piece of land
w = the width of the rectangular piece of land
The length of a rectangular piece of land is 90 yards more than three times its width:
l = 90 + 3w
The perimeter is 780 yards:
2(l + w) = 780 divide both sides by 2
l + w = 390
by solving the system of equations:
l = 90 + 3w
l + w = 390
we find:
l = 315 yd
w = 75 yd
click here to see the step by step solution of the system of equations:
the dimensions of the rectangular yard are: the length is 315 yards and the width is 75 yards.