a swimming pool is three times as long as it is wide. the sidewalk around the pool is 72 yds long. determine the length and width of the pool

Length - 54 yds

Width - 18 yds

Step-by-step explanation:

72 yds = perimeter

3x + x = 72

4x = 72

Since 4x equals 72, you would divide 72 by 4 to find out how much x equals.

72/4 = 18 yds

18 yds = width

Since the length is three times as long as the width, you would multiply 18 by 3.

18 x 3 = 54

54 yds = length

72 over 3 and that is the width