Given:
The longer sides of a rectangular garden = 15 feet
It were 3 times longer than the shorter sides.
To find:
The total distance covered by Zack if he walked all the way around the garden.
Solution:
Let the shorter side be x.
Longer side = 15 feet
According to given equation, longer side is 3 times longer than the shorter sides.
[tex]15=3x[/tex]
Divide both sides by 3.
[tex]5=x[/tex]
So, the measure of shorter side is 5 feet.
The total distance covered by Zack if he walked all the way around the garden is the perimeter of the garden.
Perimeter of rectangular garden is
[tex]Perimeter=2(length +width)[/tex]
[tex]Perimeter=2(15 +5)[/tex]
[tex]Perimeter=2(20)[/tex]
[tex]Perimeter=40[/tex]
Therefore, the total distance covered by Zack is 40 feet.