Question

Martin needs 60 meters of fence to go around a rectangular garden.

The length, l, of the garden is twice its width w.
Three of these equations give the correct value for w.

Which equation does NOT?



2 • w + 2 • 2w = 60


2 • (2w + w) = 60


w + 2w = 60


w + 2w + w + 2w = 60

Answer 1

w + 2w = 60 would be your answer.

Answer 2

w + 2w = 60

Explanation:

w + 2w = 60

This equation will not give you the correct value for W because W is the siez or represents the size of the smaller side, since you have 4 sides, 2 small and 2 big, the sum of this 4 sides will be the perimeter, or the total meters of fence needed, since the total meter of fence need is 60 and in the equation you just have 2 sides, the value for W will be double than the real.