An architect designs a rectangular flower garden such that the width is exactly two-thirds of the length. if 390 feet of antique picket fencing are to be used to enclose the garden, find the dimensions of the garden.

Length (L): L

width (w): (2/3)L

Perimeter (P) = 2L + 2w

               390 = 2(L) + 2(2/3)(L)

               1170 = 6L + 4L

               1170 = 10L

                  117 = L

width (w): (2/3)L   = (2/3)(117) = 2(39)   = 78

width = 78 ft, length = 117 ft

step-by-step explanation:

mean or average is 40.6