The length if Sally's garden is 4 meters greater than 3 times the width. The perimeter of her garden is 72 meters. Find the dimensions of Sally's garden.

Answer: So lets say that the width is w. The length (L) is 4 meters greater than 3 times the width. 3 times the width would be 3w, and then 4 meters greater than that would be 3w+4. You have two widths and two lengths to a rectangle that must add up to equal 72. So 2w + 2L = 72. But remember that one L equals 3w+4

2 (w) + 2 (3w+4) = 72

2w+6w+8=72

8w+8=72

8w=64

w=8

L=3w+4

L=3 (8) + 4

L=24+4

L=28

So the dimensions are 8 meters by 28 meters

To check 2 (8) + 2 (28) = 72